CVE-2025-49844
criticalRedis is an open source, in-memory database that persists on disk.
Vendor / product: Redis — redis
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
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