Critical 10.0Published Oct 3, 2025

CVE-2025-49844Redis Lua Use-After-Free may lead to remote code execution

Updated under an hour ago (Oct 27, 2026, 3:00 AM ET)

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Every CVE for redis

Exploited in the last 30 days

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: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Mar 20, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

redis redis redis:redis (from the name)	before 8.2.2	CNA record
redis redis redis:redis	before 6.2.20; from 7.0 before 7.2.11; from 7.4.0 before 7.4.6; from 8.0.0 before 8.0.4; from 8.2.0 before 8.2.2	NVD
lfprojects valkey lfprojects:valkey	before 7.2.11; from 8.0.0 before 8.0.6; from 8.1.0 before 8.1.4	NVD

References

References

https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q	x-refsource-confirm, third-party-advisory
https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539	x-refsource-misc, patch
https://github.com/redis/redis/releases/tag/8.2.2	x-refsource-misc, release-notes
http://www.openwall.com/lists/oss-security/2025/10/07/2	mailing-list, third-party-advisory
https://github.com/lastvocher/redis-CVE-2025-49844

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.