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CVE-2025-49844

9.9 critical exploit ×19 SSVC exploitation: poc Modified
NVD · CVE.org

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.

Fix

Public exploits 19

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

In the news 1

Change history 1

  1. First seenCVSS 9.9 · redis, lfprojectsNVD modified 2026-10-19 16:10

Affected (CPE criteria) 2

  • cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
  • cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:*

References 5