← Back to CVEs

CVE-2025-49844

CRITICAL

9.9

Description

Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.

CVE Details

CVSS v3.1 Score9.9

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published10/3/2025

Last Modified3/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

lfprojects:valkeyredis:redis

Weaknesses (CWE)

CWE-416

References

https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539(security-advisories@github.com)

https://github.com/redis/redis/releases/tag/8.2.2(security-advisories@github.com)

https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q(security-advisories@github.com)

http://www.openwall.com/lists/oss-security/2025/10/07/2(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/lastvocher/redis-CVE-2025-49844(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.