title: Redis Software release notes 8.0.16-33 (March 2026)

summary: Bug fix for LDAP authentication failures after cluster upgrades. Bug fix for Active-Active database configuration update failures due to missing module featureset version errors after database upgrades.

title: Overview

text: This is a maintenance release for [Redis Software version 8.0.16](https://redis.io/downloads/#Redis_Software).

title: Highlights

text:
This version offers:

- A bug fix for LDAP authentication failures after cluster upgrades

- A bug fix for Active-Active database configuration update failures due to missing module featureset version errors after database upgrades

title: New in this release

title: Redis database versions

title: Redis feature sets

title: Resolved issues

text:
- RS191290: Fixed an issue that could cause LDAP authentication to fail with "certificate signed by unknown authority" errors after upgrading to Redis Software version 8.0.10 or 8.0.16-29.

- RS191210: Fixed an issue where `PATCH /v1/crdbs/<crdb_guid>` requests to update Active-Active database configurations could fail with "unable to find featureset version for module" errors after upgrading the cluster version to Redis Software 8.0.10 or 8.0.16 and the database version to Redis 8.4.

title: Version changes

title: Supported platforms

text:
The following table provides a snapshot of supported platforms as of this Redis Software release. See the [supported platforms reference]() for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

:warning: Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

| Redis Software
major versions | 8.0 | 7.22 | 7.8 | 7.4 | 7.2 | 6.4 | 6.2 |
|---------------------------------|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
| **Release date** | Oct 2025 | May 2025 | Nov 2024 | Feb 2024 | Aug 2023 | Feb 2023 | Aug 2021 |
| [**End-of-life date**]() | Determined after
next major release | Oct 2027 | May 2027 | Nov 2026 | Feb 2026 | Aug 2025 | Feb 2025 |
| **Platforms** | | | | | | | |
| RHEL 9 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | – | – | – |
| RHEL 9
FIPS mode[5](#table-note-5) | ✅ | ✅ | ✅ | – | – | – | – |
| RHEL 8 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| RHEL 7 &
compatible distros[1](#table-note-1) | – | – | – | – | :warning: | :warning: | :warning: |
| Ubuntu 22.04[2](#table-note-2) | ✅ | ✅ | ✅ | – | – | – | – |
| Ubuntu 20.04[2](#table-note-2) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | – |
| Ubuntu 18.04[2](#table-note-2) | – | – | – | :warning: | :warning: | :warning: | :warning: |
| Ubuntu 16.04[2](#table-note-2) | – | – | – | – | :warning: | :warning: | :warning: |
| Amazon Linux 2 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | – |
| Amazon Linux 1 | – | – | – | – | :warning: | :warning: | :warning: |
| Kubernetes[3](#table-note-3) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Docker[4](#table-note-4) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the [Redis Enterprise for Kubernetes documentation]() for details about support per version and Kubernetes distribution.

4. [Docker images]() of Redis Software are certified for development and testing only.

5. Supported only if [FIPS was enabled during RHEL installation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/switching-rhel-to-fips-mode_security-hardening#proc_installing-the-system-with-fips-mode-enabled_switching-rhel-to-fips-mode) to ensure FIPS compliance.

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (8.0.16-33 March release) |
|---------|---------------------------------------|
| Ubuntu 20 | c6dca8c93569f4902e06ecb9989dddd5b5f2cecc985c22377d70227ba713952d |
| Ubuntu 22 (amd64) | 298f3f9f9873266a71737b1f43f2c8e7f5dfba0f066b895835989fc82996a6ff |
| Ubuntu 22 (arm64) | 44e328ef023833c5708c8693b73c7e52ca05f363f1d3a052b12e794878155804 |
| Red Hat Enterprise Linux (RHEL) 8 | 071f8770a5f677adac02ef73715ccd90f3b64f3912f718f55dba87ecaedcaf4e |
| Red Hat Enterprise Linux (RHEL) 9 (amd64) | 6be76e5c5eb21a9a0355cf8cfb93d5c563d6b3d472b57fbea029fb0eb9f6768b |
| Red Hat Enterprise Linux (RHEL) 9 (arm64) | c4065741fae80f4a30e3226f9b45b3b6d72ca392e23bc79ca0a8798fb8fcb660 |
| Amazon Linux 2 | 7314d582c3724a45d4eacb5af0ccb1d54ba804f0929a5fec56da5021cf205479 |

title: Known issues

text: - RS155734: Endpoint availability metrics do not work as expected due to a calculation error.

title: Known limitations

text:
#### Trim ACKED not supported for Active-Active 8.4 databases

For Active-Active databases running Redis database version 8.4, the `ACKED` option is not supported for trimming commands.

#### Rolling upgrade limitation for clusters with custom or deprecated modules

Due to module handling changes introduced in Redis Software version 8.0, upgrading a cluster that contains custom or deprecated modules, such as RedisGraph and RedisGears v2, can become stuck when adding a new node to the cluster during a rolling upgrade.

#### Module commands limitation during Active-Active database upgrades to Redis 8.0

When upgrading an Active-Active database to Redis version 8.0, you cannot use module commands until all Active-Active database instances have been upgraded. Currently, these commands are not blocked automatically.

#### Redis 8.0 database cannot be created with flash

You cannot create a Redis 8.0 database with flash storage enabled. Create a Redis 8.0 database with RAM-only storage instead, or use Redis 8.2 for flash-enabled (Redis Flex) databases.

#### Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

- Purge an Active-Active instance.

    Use [`crdb-cli crdb purge-instance`]() instead.

- Search and export the log.

title: Security

text:
#### Redis Open Source security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [Redis Open Source](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for Redis Open Source do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in Redis Open Source.

Redis Software 8.0.16-33 supports Redis Open Source 8.4, 8.2, 8.0, 7.4, 7.2, and 6.2. Below is the list of Redis Open Source CVEs and other security vulnerabilities fixed by version.

Redis 8.2.x:

- RedisBloom: Restore invalid filter.

- (CVE-2025-62507) A user can run the `XACKDEL` command with multiple IDs and trigger a stack buffer overflow, which can potentially lead to remote code execution.

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 8.0.x:

- RedisBloom: Restore invalid filter.

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 7.4.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

Redis 7.2.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)


title: Redis Software release notes 8.0.2-17 (October 2025)

summary: Redis Software 8! The most performant, most secure, and richest version so far. Built for performance, scale, and reliability to power modern ML and AI applications.

page_type: content

title: Overview

role: overview

text: [Redis Software version 8.0.2](https://redis.io/downloads/#Redis_Software) is now available!

title: Highlights

role: content

text:
This version offers:

- Redis 8.0 and 8.2 feature set versions

- Performance improvements and memory reduction

- New vector set data structure

- Redis Flex revamped engine

- Redis Search upgrades

- Lag-aware availability API

- Metrics stream engine (General Availability)

- Simplified module management

- New REST API fields for database and cluster configuration

- Customer-managed certificates for internode encryption

- Smart client handoffs

title: New in this release

title: New features

text:
#### Redis 8.0 and 8.2 feature sets

Redis 8.0 and 8.2 feature sets are now available when you [create]() or [upgrade]() a database with database version 8.2.

##### Redis 8.0 feature set and enhancements

- Preview of a new [vector set]() data structure that supports high-dimensional vector similarity search, ideal for AI use cases such as semantic search and recommendation systems.

- New hash commands [`HGETEX`](), [`HSETEX`](), and [`HGETDEL`](), which can simplify caching and session management patterns.

- Enhanced access control lists (ACLs) to support new data structures introduced in Redis 8.

    - Existing ACL categories such as `@read` and `@write` now include commands for JSON, time series, vector, and probabilistic data structures.

    - New ACL categories: `@search`, `@json`, `@timeseries`, `@bloom`, `@cuckoo`, `@topk`, `@cms`, and `@tdigest`.

- Redis Search improvements.

- Significant performance improvements, including:

    - Up to 87% lower command latency.

    - 35% memory savings for replica nodes.

    - 16x more query processing capacity with horizontal and vertical scaling.

- See [What's new in Redis 8.0]() and [Redis Open Source 8.0 release notes]() for more details.

##### Redis 8.2 feature set and enhancements

- New Redis streams commands [`XDELEX`]() and [`XACKDEL`]() that simplify consumer group management and stream lifecycle operations.

- New operators `DIFF`, `DIFF1`, `ANDOR`, and `ONE` for the [`BITOP`]() command, which enable more complex bitmap workflows and can simplify operations that previously required multiple commands.

- New keyspace notification event types `OVERWRITTEN` and `TYPE_CHANGED` that provide better visibility into data changes.

- Performance optimizations and memory efficiency improvements.

- Redis Search improvements:

    - New [SVS-VAMANA vector index]() type, which supports vector compression.

    - New `SHARD_K_RATIO` parameter for [K-nearest neighbor (KNN) vector queries](), which favors network latency over accuracy to provide faster responses when exact precision isn't critical.

- See [What's new in Redis 8.2]() and [Redis Open Source 8.2 release notes]() for more details.

#### Built-in capabilities with Redis 8

Redis Software databases created with or upgraded to Redis version 8 include all the Redis capabilities, built in the database version as follows:

| Database type | Automatically enabled capabilities |
|---------------|------------------------------------|
| RAM-only | [Search and query]()
[JSON]()
[Time series]()
[Probabilistic]()  |
| Flash-enabled ([Redis Flex]()) | [JSON]()
[Probabilistic]() |
| [Active-Active]()[1](#enabled-modules-table-note-1) | [Search and query]()
[JSON]() |

1. Upgrading existing Active-Active databases to Redis version 8 does not automatically enable these capabilities. Only new Active-Active databases created with Redis version 8 enable these capabilities by default.

#### Performance improvements and memory reduction

- More than 30 performance, resource utilization, and memory footprint improvements.

- An improved replication mechanism that is more performant (faster) and robust and saves up to 35% memory during replication.

- Up to 87% lower command latency.

- Redis Search: Up to 144% higher QPS and new vector compression.

#### Redis Flex revamped engine

Redis Flex is getting a revamped engine with performance improvements, increased stability, and the removal of previous limitations around RAM utilization.

Redis Flex now offloads the least used keys with their values, allowing more hot data to be stored in RAM. This increases performance for most real-world use cases.

Past limitations requiring minimum RAM allocation to store all the database's keys are no longer relevant, allowing more flexibility and higher resource utilization.

- Databases with Redis version 8.2 and later (newly created or upgraded to those versions) automatically use the new Redis Flex engine.

- Databases with Redis version 7.4 and earlier will continue to run on the previous engine.

For more information about Redis Flex, see:

- [Redis Flex overview]()
- [Redis Flex quick start]()

#### Lag-aware availability API

The [database availability API]() now supports lag-aware availability checks that consider replication lag tolerance.

You can reduce the risk of data inconsistencies during disaster recovery by incorporating lag-aware availability checks into your disaster recovery solution and ensuring failover-failback flows only occur when databases are accessible and sufficiently synchronized.

The lag tolerance threshold is 100 milliseconds by default. Depending on factors such as workload, network conditions, and  throughput, you might want to adjust the lag tolerance threshold using one of the following methods:

- Change the default threshold for the entire cluster by setting `availability_lag_tolerance_ms` with an [update cluster]() request.

- Override the default threshold by adding the `availability_lag_tolerance_ms` query parameter to specific lag-aware [availability checks](). For example:

    [code example]

For more details, see [Check database availability for monitoring and load balancers]().

#### Metrics stream engine GA

The [metrics stream engine]() is now generally available:

- The metrics stream engine's exporter-based infrastructure provides access to more accurate, real-time data. This enhanced, scalable monitoring system allows you to set up more effective alerts and respond to issues faster.

- Exposes a new `/v2` Prometheus scraping endpoint that you can use to export metrics to external monitoring tools such as Grafana, DataDog, NewRelic, and Dynatrace.

- Exports raw data instead of aggregated data to improve monitoring at scale and accuracy compared to v1 Prometheus metrics.

- For a list of metrics exported by the metrics stream engine, see [Prometheus metrics v2]().

- To transition to the metrics stream engine, either migrate your existing dashboards using [Prometheus v1 metrics and equivalent v2 PromQL]() or use [new preconfigured dashboards]().

- As part of the transition to the metrics stream engine, some internal cluster manager alerts were deprecated in favor of external monitoring solutions. See the [alerts transition plan]() for guidance.

- See [Best practices for monitoring]() for a list of recommended metrics to monitor.

#### Customer-managed certificates for internode encryption

Instead of using Redis Software's self-signed certificates for internode encryption, you can provide certificates generated by your Certificate Authority (CA). See [Customer-provided certificates ]() for details.

#### Smart client handoffs

Smart client handoffs enable zero-disruption maintenance for Redis databases by allowing clients to reconnect gracefully during planned operations like cluster upgrades or database version upgrades. Applications stay online with no hard disconnects or timeout errors. See [Smart client handoffs]() for more information.

title: Enhancements

text:
- Module management enhancements:

    - Operating system (OS) upgrades no longer require manually uploading module packages compiled for the target OS version to a node in the existing cluster.

    - Copying module packages to a node in the cluster before cluster recovery is no longer required.

    - Added new REST API requests to manage custom, user-defined modules. See [Custom module management APIs]() for details.

    - Added module configuration fields to the database configuration. Use `search`, `query_performance_factor`, `timeseries`, and `probabilistic` objects to configure Redis modules instead of the deprecated `module_args` field. These fields are visible in [`GET /v1/bdbs`]() requests only when using the `extended=true` query parameter.

    - Added `--update-db-config-modules` option to the [`crdb-cli crdb update`]() command to streamline updating module information in the CRDB configuration after upgrading modules used by Active-Active databases. Use this option only after all CRDB database instances have upgraded their modules.

        [code example]

- Added a check to block new user creation after the maximum limit of 32,000 users has been reached:

    - Added a [cluster alert]() `cluster_users_count_approaches_limit`, which triggers when the number of users surpasses a threshold percentage of the maximum user limit. This alert is enabled with a 90% threshold by default on new clusters.

    - Added a `users_count` cluster metric to [Prometheus metrics v2]() that shows the current number of users on the cluster.

- Additional REST API enhancements:

    - New `last_login` field for [users](), which stores the UNIX timestamp of the user's last successful login to the Cluster Manager UI or REST API.

    - Added [cluster configuration]() fields:

        - `disconnect_clients_on_password_removal`: Controls whether client connections using removed, revoked, or rotated passwords are actively disconnected.

        - `replica_sconns_on_demand`: When enabled, the DMC stops holding persistent connections to replica shards and reduces the number of internode connections by half.

        - `metrics_auth`: If set to `true`, enables basic authentication for Prometheus exporters and restricts access to authenticated users with `admin`, `cluster_member`, or `cluster_viewer` [management roles]().

    - Added [database configuration]() fields:

        - `conns_global_maximum_dedicated`: Defines the maximum number of dedicated server connections for a database across all workers.

        - `conns_minimum_dedicated`: Defines the minimum number of dedicated server connections the DMC maintains per worker per shard.

        - `disconnect_clients_on_password_removal`: Controls whether client connections using removed, revoked, or rotated passwords are actively disconnected.

        - `link_sconn_on_full_request`: Feature flag for DMC behavior on linking client requests.

        - `partial_request_timeout_seconds`: Timeout for incomplete client commands that cause head-of-line blocking.

        - `preemptive_drain_timeout_seconds`: Timeout for preemptive drain of client connections before a shard is taken down.

        - `replica_sconns_on_demand`: When enabled, the DMC stops holding persistent connections to replica shards and reduces the number of internode connections by half.

        - `use_selective_flush`: Enables selective flush of destination shards.

- Added action IDs to operation and state machine log entries.

- Internal connections no longer generate `new_int_conn` audit records.

- Improved control plane authentication handling for new clusters with a dedicated authentication service.

- Improved handling of long-running read-only scripts to reduce unnecessary failovers.

title: Redis database versions

text:
Redis Software version 8.0.2 includes five Redis database versions: 8.2.1, 8.0.2, 7.4.3, 7.2.7, and 6.2.13.

The [default Redis database version]() is 8.2.

title: Redis feature sets

text:
Redis Software includes multiple feature sets, compatible with different Redis database versions.

The following table shows which Redis modules are compatible with each Redis database version included in this release.

| Redis database version | Compatible Redis modules |
|------------------------|--------------------------|
| 8.2 | RediSearch 8.2
RedisJSON 8.2
RedisTimeSeries 8.2
RedisBloom 8.2
See [What's new in Redis 8.2]() and [Redis Open Source 8.2 release notes]() |
| 8.0 | RediSearch 8.0
RedisJSON 8.0
RedisTimeSeries 8.0
RedisBloom 8.0
See [What's new in Redis 8.0]() and [Redis Open Source 8.0 release notes]() |
| 7.4 | [RediSearch 2.10]()
[RedisJSON 2.8]()
[RedisTimeSeries 1.12]()
[RedisBloom 2.8]() |
| 7.2 | [RediSearch 2.8]()
[RedisJSON 2.6]()
[RedisTimeSeries 1.10]()
[RedisBloom 2.6]() |
| 6.2 | [RediSearch 2.6]()
[RedisJSON 2.4]()
[RedisTimeSeries 1.8]()
[RedisBloom 2.4]() |

title: Resolved issues

text:
- RS156391: Fixed an issue where the `job_scheduler`'s memory usage could increase significantly when the diagnostic logging service was enabled.

- RS132033: Fixed an issue where out-of-memory errors in the Lua interpreter prevented scripts from running Redis commands until the shard was restarted. This fix is included in Redis database version 7.2 and requires a database upgrade from earlier versions.

- RS153192: Updated the installer's minimum RAM requirement to 8 GB.

- RS159685: Fixed an issue with high DMC CPU usage after changing the primary node of a cluster that has Active-Active databases.

- RS160546: Fixed an issue where `rladmin status extra all` did not show available RAM.

- RS150592: Fixed an issue where connection errors were not automatically retried.

- RS161945: Fixed an issue where state machine logs showed a generic state machine ID instead of the descriptive state machine name when creating a database from persistence.

- RS160196: Fixed an issue where a node could be set as primary before completing the bootstrap process.

- RS153736: Fixed an issue where the `PUBSUB SHARDNUMSUB` command would not respond when called without arguments if the OSS Cluster API was enabled.

- RS163254: Fixed an issue where the policy update logs displayed inconsistent boolean value formats, mixing `enabled/disabled` and `True/False`.

- RS158250: Fixed an issue with Active-Active databases with search enabled where replica shards could crash after migration to a new node.

- RS164471: Fixed an issue where the script to generate self-signed certificates (generate_self_signed_certs.sh) failed on custom installations due to hard-coded file paths.

- RS164218: Fixed an issue where Speedb log files were not properly rotated and archived, causing logs to accumulate and consume disk space.

- RS162719: Fixed an issue where connection problems could prevent shards from restarting during failover and cause the failover process to become stuck.

- RS161589: Changed the installer answers file parameter from `skip_updating_env_path` to `update_env_path` to improve clarity and accuracy.

- RS161574: Fixed an issue where Active-Active database synchronization could fail when Lua scripts used certain read-only commands that accessed keys across multiple slots.

- RS160347: Made optimizations to reduce the `heartbeatd` service's memory usage.

- RS156394: Improved error messages when module commands are temporarily unavailable during cluster configuration changes.

- RS154815: Improved diagnostic reporting for connection issues when the maximum number of transactions is reached.

- RS147053: Fixed an issue where some `system_reserved_ports` were not displayed in the `rladmin info cluster` command output.

- RS114668: Fixed an issue where setting `failure_detection_sensitivity` with the `bootstrap` API did not automatically update `watchdog_profile` accordingly.

- RS163266: Fixed an issue where shard rebalancing could take excessive time when replicas were unresponsive due to high CPU load by reducing connection retry attempts from 300 to 5.

- RS162524: Fixed an issue where the DNS backend could fail with "too many open files" errors due to socket leaks.

- RS161547: Fixed an issue where nodes could fail to send messages related to state machines due to a timing issue between notification threads and management threads.

- RS155990: Fixed an issue where the `forwarding_state` field was missing from the endpoint schema.

- RS166307: Updated v2 Prometheus metric names to comply with naming conventions by changing the `proxy_` prefix to `endpoint_` for `connections_rate`, `rate_limit_ok`, `rate_limit_overflows`, `accepted_connections`, and `dispatch_failures`.

- RS164703: Improved diagnostic reporting for shard restart operations by adding PID logging before shutdown.

- RS152179: Reduced log noise by removing a harmless error message that appeared repeatedly in DMC proxy logs.

- RS132087: Fixed inconsistent node status reports between `rladmin` and the REST API.

- RS166878: Fixed legacy `module_args` mapping to handle boolean fields as `TRUE/FALSE` values instead of flags.

- RS166825: Fixed an issue where the Sentinel service could become unresponsive while processing certain commands due to a timing issue.

- RS162290: Fixed an issue where the node status API returned 0 instead of the actual provisional RAM and flash values if the node reached its shard limit.

- RS158251: Added a check to block new user creation after the maximum limit of 32,000 users has been reached to prevent DMC proxy crashes.

- RS166813: Fixed an issue where Lua incorrectly converted empty JSON arrays into empty JSON objects.

- RS166683: Fixed an issue where `FT.DROPINDEX index DD` deleted indexed keys on the local Active-Active database instance but failed to sync the deletions to instances in other participating clusters.

- RS162972: Fixed an issue where the REST API was only accessible from the primary node when certificate-based authentication was enabled.

- RS158972: Fixed an issue where certificate verification failed during node join and replace operations when internode encryption was enabled, causing connection errors until certificates were fetched from the primary node.

- RS123263: Fixed an issue where creating a new role with a specified UID failed with "A uid is already assigned" error.

- RS120420: Fixed an issue where `rladmin cluster config` incorrectly included quotes as part of the cipher suite value when updating `control_cipher_suites` configuration.

- RS170611: Fixed an issue where the `generate_self_signed_certs.sh` script incorrectly formatted wildcard certificate entries.

- RS167849: Fixed an issue where `rlutil check` incorrectly reported that existing databases did not exist.

- RS167199: Fixed an issue where the remove node action could become stuck during node decommissioning.

- RS166990: Fixed an issue where install logs were not included in support packages when installation or upgrade operations failed.

- RS166528: Improved error handling when verifying that a data file has been loaded.

- RS162973: Fixed an issue with shard failover where the shard failed to restart because its port was not released quickly enough after it crashed.

- RS166122: Fixed an issue where the actions API could incorrectly report state machine operations as running after they completed.

- RS171579: Fixed an issue where the new UI incorrectly added `default_user: False` when the default_user field was absent, causing connection issues.

title: Version changes

role: compatibility

text:
- [`POST /v1/cluster/actions/change_master`]() REST API requests will no longer allow a node that exists but is not finished bootstrapping to become the primary node. Such requests will now return the status code `406 Not Acceptable`.

- Node status now returns the actual provisional RAM and flash values even when the maximum number of shards on the node (`max_redis_servers`) is reached. Previously, the API returned 0 for `provisional_ram_of_node` and `provisional_flash_of_node` when a node reached its shard limit. This change affects REST API node status requests and the `rladmin status nodes` command's output.

title: Breaking changes

text:
- LDAP filters for `user_dn_query` and `dn_group_query` now strictly require parentheses to function correctly. Filters that previously worked without parentheses will no longer work after upgrading to Redis Software 8.0.x. For example, you must include the parentheses in `(sAMAccountName=%u)`.

- Redis Software installation script changes:

    - Changed the `--skip-updating-env-path` option to `--update-env-path` when running [`install.sh`]().

    - Changed the `skip_updating_env_path` parameter to `update_env_path` in the [installation answers file]().

title: Redis database version 8 breaking changes {#redis-8-breaking-changes}

text:
When new major versions of Redis Open Source change existing commands, upgrading your database to a new version can potentially break some functionality. Before you upgrade, read the provided list of breaking changes that affect Redis Software and update any applications that connect to your database to handle these changes.

#### ACL behavior changes

Before Redis 8, the existing [ACL]() categories `@read`, `@write`, `@dangerous`, `@admin`, `@slow`, and `@fast` did not include commands for Redis Search and the JSON, time series, and probabilistic data structures.

Starting with Redis 8, Redis includes all Query Engine, JSON, time series, Bloom filter, cuckoo filter, top-k, count-min sketch, and t-digest commands in these existing ACL categories.

As a result:

- Existing ACL rules such as `+@read +@write` will allow access to more commands than in previous versions of Redis. Here are some examples:

  - A user with `+@read` access will be able to execute `FT.SEARCH`.

  - A user with `+@write` access will be able to execute `JSON.SET`.

- ACL rules such as `+@all -@write`  will allow access to fewer commands than previous versions of Redis.

  - For example, a user with `+@all -@write` will not be able to execute `JSON.SET`.

  - Explicit inclusion of new [command categories]() is required to maintain access. The new categories are: `@search`, `@json`, `@timeseries`, `@bloom`, `@cuckoo`, `@topk`, `@cms`, and `@tdigest`.

- ACL rules such as `+@read +JSON.GET` can now be simplified as `+@read` because `JSON.GET` is included in the `@read` category.

Note that the `@all` category did not change, as it always included all the commands.

#### Redis Search changes

The following changes affect behavior and validation in Redis Search:

- Enforces validation for `LIMIT` arguments (offset must be 0 if limit is 0).

- Enforces parsing rules for `FT.CURSOR READ` and `FT.ALIASADD`.

- Parentheses are now required for exponentiation precedence in `APPLY` expressions.

- Invalid input now returns errors instead of empty results.

- Default values revisited for reducers like `AVG`, `COUNT`, `SUM`, `STDDEV`, `QUANTILE`, and others.

- Updates to scoring (`BM25` is now the default instead of `TF-IDF`).

- Improved handling of expired records, memory constraints, and malformed fields.

title: Reserved ports

text:
Make sure the following ports are open before upgrading Redis Software.

Ports reserved as of Redis Software version 7.22.0:

| Port | Process name | Usage |
|------|--------------|-------|
| 3346 | cluster_api_internal | Cluster API internal port |
| 3351 | cluster_watchdog_grpc_api | Cluster watchdog now supports gRPC |
| 3352 | grpc_service_mesh | gRPC communication between nodes |
| 3353 | local_grpc_service_mesh | Local gRPC services |
| 3354 | grpc_gossip_envoy | gRPC gossip protocol communication between nodes |
| 3355 | authentication_service | Authentication service internal port |

Ports reserved as of Redis Software version 7.8.2:

| Port | Process name | Usage |
|------|--------------|-------|
| 3347 | cert_exporter | Reports cluster certificate metrics |
| 3348 | process_exporter | Reports process metrics for DMC and Redis processes |
| 3349 | cluster_wd_exporter | Reports cluster watchdog metrics |
| 3350 | db_controller | Internode communication |
| 9091 | node_exporter | Reports host node metrics related to CPU, memory, disk, and more |
| 9125 | statsd_exporter | Reports push metrics related to the DMC and syncer, and some cluster and node metrics |

See [Ports and port ranges used by Redis Software]() for a complete list.

title: Deprecations

text:
#### API deprecations

- Deprecated the `policy` field for [bootstrap]() REST API requests. Use [`PUT /v1/cluster/policy`]() to change cluster policies after cluster creation instead.

- Deprecated the `module_args` field for [database]() REST API requests. Use the new module configuration objects `search`, `timeseries`, and `probabilistic` instead.

#### Redis Search deprecations

- Deprecated commands: `FT.ADD`, `FT.SAFEADD`, `FT.DEL`, `FT.GET`, `FT.MGET`, `FT.SYNADD`, `FT.DROP`, `FT._DROPIFX`, and `FT.CONFIG`.

- Deprecated `FT.SEARCH` options: `GEOFILTER`, `FILTER`, and `NOSTOPWORDS`.

- Deprecated vector search options: `INITIAL_CAP` and `BLOCK_SIZE`.

- Deprecated configuration parameters: `WORKER_THREADS`, `MT_MODE`, `PRIVILEGED_THREADS_NUM`, and `GCSCANSIZE`.

- Deprecated dialects: `DIALECT 1`, `DIALECT 3`, and `DIALECT 4`.

#### Internal monitoring and v1 Prometheus metrics deprecation

The existing [internal monitoring engine]() is deprecated. We recommend transitioning to the new [metrics stream engine]() for improved performance, enhanced integration capabilities, and modernized metrics streaming.

V1 Prometheus metrics are deprecated but still available. To transition to the new metrics stream engine, either migrate your existing dashboards using [this guide]() or use [new preconfigured dashboards]().

As part of the transition to the metrics stream engine, some internal cluster manager alerts were deprecated in favor of external monitoring solutions. See the [alerts transition plan]() for guidance.

title: Supported platforms

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (8.0.2-17 October release) |
|---------|---------------------------------------|
| Ubuntu 20 | 48671f14727daeb79a2e30d4f176ce2ed611641530f7f91fab4639572f7e33fc |
| Ubuntu 22 (amd64) | dd3f0fc0ac499f68b8bc155290e86ca1a6686f85312be1058ae3a05c46ec5558 |
| Ubuntu 22 (arm64) | 0fca0f5a365954fa062fd5b7304666bb147f1f6f63eea93b4d932faab4082edd |
| Red Hat Enterprise Linux (RHEL) 8 | f707a31101598a88c64fc2cd7eee7266d51ff0e1a90c768584f88e1459d158fc |
| Red Hat Enterprise Linux (RHEL) 9 | 00015c18a6734d243ae82c1046bd320cbb904b78912c9835d287b17d807c1161 |
| Amazon Linux 2 | aaeb4c71f6ee4883213909fcface49b442b2f1c536c244159dd5acc2cafed06e |

title: Known issues

text:
- RS131972: Creating an ACL that contains a line break in the Cluster Manager UI can cause shard migration to fail due to ACL errors.

- RS155734: Endpoint availability metrics do not work as expected due to a calculation error.

title: Known limitations

text:
#### Rolling upgrade limitation for clusters with custom or deprecated modules

Due to module handling changes introduced in Redis Software version 8.0, upgrading a cluster that contains custom or deprecated modules, such as RedisGraph and RedisGears v2, can become stuck when adding a new node to the cluster during a rolling upgrade.

#### Module commands limitation during Active-Active database upgrades to Redis 8.0

When upgrading an Active-Active database to Redis version 8.0, you cannot use module commands until all Active-Active database instances have been upgraded. Currently, these commands are not blocked automatically.

#### Redis 8.0 database cannot be created with flash

You cannot create a Redis 8.0 database with flash storage enabled. Create a Redis 8.0 database with RAM-only storage instead, or use Redis 8.2 for flash-enabled (Redis Flex) databases.

#### New Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

- Purge an Active-Active instance.

    Use [`crdb-cli crdb purge-instance`]() instead.

- Search and export the log.

title: Security

role: security

text:
#### Redis Open Source security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [Redis Open Source](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for Redis Open Source do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in Redis Open Source.

Redis Software 8.0.2-17 supports Redis Open Source 8.2, 8.0, 7.4, 7.2, and 6.2. Below is the list of Redis Open Source CVEs and other security vulnerabilities fixed by version.

Redis 8.2.x:

- (CVE-2025-62507) A user can run the `XACKDEL` command with multiple IDs and trigger a stack buffer overflow, which can potentially lead to remote code execution.

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 8.0.x:

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 7.4.x:

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

Redis 7.2.x:

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)

section_id: new-features

code: crdb-cli crdb update --crdb-guid <guid> --update-db-config-modules true

section_id: enhancements


title: Redis Software release notes 8.0.2-41 (November 2025)

summary: Bug fixes for cluster_wd configuration after restarts, internode encryption certificate storage and retrieval, database creation, Lua script migration issues, and database endpoint assignment after node removal.

title: Overview

text: This is a maintenance release for [Redis Software version 8.0.2](https://redis.io/downloads/#Redis_Software).

title: Highlights

text:
This version offers:

- Bug fixes for `cluster_wd` configuration after restarts, internode encryption certificate storage and retrieval, database creation, Lua script migration issues, and database endpoint assignment after node removal

title: New in this release

title: Redis database versions

title: Redis feature sets

title: Resolved issues

text:
- RS176280: Fixed an issue where `cluster_wd` reverted to the default configuration after restarting.

- RS176540: Fixed inconsistencies between storage and retrieval APIs for internode encryption certificates, which could cause issues in Kubernetes deployments.

- RS170732: Fixed an issue where database creation could become stuck due to connection issues.

- RS173541: Fixed an issue where Lua scripts were not migrated during database import and sync operations, causing script execution errors on the destination cluster.

- RS172076: Fixed an issue where database endpoints could mistakenly be assigned to a recently removed node.

title: Version changes

title: Supported platforms

text:
The following table provides a snapshot of supported platforms as of this Redis Software release. See the [supported platforms reference]() for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

:warning: Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

| Redis Software
major versions | 8.0 | 7.22 | 7.8 | 7.4 | 7.2 | 6.4 | 6.2 |
|---------------------------------|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
| **Release date** | Oct 2025 | May 2025 | Nov 2024 | Feb 2024 | Aug 2023 | Feb 2023 | Aug 2021 |
| [**End-of-life date**]() | Determined after
next major release | Oct 2027 | May 2027 | Nov 2026 | Feb 2026 | Aug 2025 | Feb 2025 |
| **Platforms** | | | | | | | |
| RHEL 9 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | – | – | – |
| RHEL 9
FIPS mode[5](#table-note-5) | ✅ | ✅ | ✅ | – | – | – | – |
| RHEL 8 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| RHEL 7 &
compatible distros[1](#table-note-1) | – | – | – | – | :warning: | :warning: | :warning: |
| Ubuntu 22.04[2](#table-note-2) | ✅ | ✅ | ✅ | – | – | – | – |
| Ubuntu 20.04[2](#table-note-2) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | – |
| Ubuntu 18.04[2](#table-note-2) | – | – | – | :warning: | :warning: | :warning: | :warning: |
| Ubuntu 16.04[2](#table-note-2) | – | – | – | – | :warning: | :warning: | :warning: |
| Amazon Linux 2 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | – |
| Amazon Linux 1 | – | – | – | – | :warning: | :warning: | :warning: |
| Kubernetes[3](#table-note-3) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Docker[4](#table-note-4) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the [Redis Enterprise for Kubernetes documentation]() for details about support per version and Kubernetes distribution.

4. [Docker images]() of Redis Software are certified for development and testing only.

5. Supported only if [FIPS was enabled during RHEL installation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/switching-rhel-to-fips-mode_security-hardening#proc_installing-the-system-with-fips-mode-enabled_switching-rhel-to-fips-mode) to ensure FIPS compliance.

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (8.0.2-41 November release) |
|---------|---------------------------------------|
| Ubuntu 20 | a70ac44203766d034f392fec0f8526a9589609544440ecc92a3092432ab28dec |
| Ubuntu 22 (amd64) | 4c2201b6eeb0b5c7027d919db9fef091a46e80dfffc8ba0b543275cf2471f1a6 |
| Ubuntu 22 (arm64) | bf41407af79a3ef20b3259c3ee32c0945b9f28e11757e93093555a7c52790e2d |
| Red Hat Enterprise Linux (RHEL) 8 | 97cd023348844dc8dc120cf2a6022191d82ca753fa4e85c3e8779927692be352 |
| Red Hat Enterprise Linux (RHEL) 9 | c631b5914d871b9811243c527e47e0f41ed8ea9110c70cb016af6e4731a58e72 |
| Amazon Linux 2 | 9d3504741ac8dabc17133705f4565e21b6eaea36ea9e3eb1d9f6a5367e74e137 |

title: Known issues

title: Known limitations

text:
#### Rolling upgrade limitation for clusters with custom or deprecated modules

Due to module handling changes introduced in Redis Software version 8.0, upgrading a cluster that contains custom or deprecated modules, such as RedisGraph and RedisGears v2, can become stuck when adding a new node to the cluster during a rolling upgrade.

#### Module commands limitation during Active-Active database upgrades to Redis 8.0

When upgrading an Active-Active database to Redis version 8.0, you cannot use module commands until all Active-Active database instances have been upgraded. Currently, these commands are not blocked automatically.

#### Redis 8.0 database cannot be created with flash

You cannot create a Redis 8.0 database with flash storage enabled. Create a Redis 8.0 database with RAM-only storage instead, or use Redis 8.2 for flash-enabled (Redis Flex) databases.

#### Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

- Purge an Active-Active instance.

    Use [`crdb-cli crdb purge-instance`]() instead.

- Search and export the log.

title: Security

text:
#### Redis Open Source security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [Redis Open Source](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for Redis Open Source do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in Redis Open Source.

Redis Software 8.0.2-41 supports Redis Open Source 8.2, 8.0, 7.4, 7.2, and 6.2. Below is the list of Redis Open Source CVEs and other security vulnerabilities fixed by version.

Redis 8.2.x:

- RedisBloom: Restore invalid filter.

- (CVE-2025-62507) A user can run the `XACKDEL` command with multiple IDs and trigger a stack buffer overflow, which can potentially lead to remote code execution.

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 8.0.x:

- RedisBloom: Restore invalid filter.

- The `HGETEX` command can lead to a buffer overflow.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 7.4.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

Redis 7.2.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- RedisBloom: Restore invalid filter.

- Integer overflow in `hllPatLen`.

- RedisBloom: Cuckoo filter counter overflow.

- RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

- RedisBloom: Reachable assert in `TopK_Create`

- RedisBloom: Out-of-bounds access with empty Bloom chains.

- RedisBloom: Division by zero in Cuckoo filter insertion.

- (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

- (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

- (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

- (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

- (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)