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CVE-2025-49844

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

Basic Information

CVE State
PUBLISHED
Reserved Date
June 11, 2025
Published Date
October 03, 2025
Last Updated
March 20, 2026
Vendor
redis
Product
redis
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.
Tags
nuclei_scanner

CVSS Scores

CVSS v3.1

10.0 - CRITICAL

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

SSVC Information

Exploitation
poc
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2025-10-15 14:56:30 UTC) Source

References

https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539 https://github.com/redis/redis/releases/tag/8.2.2

Known Exploited Vulnerability Information

Source Added Date
The Shadowserver (via CIRCL) 2025-10-15 14:56:30 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2025/CVE-2025-49844.yaml 2026-06-01 15:34:45 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • Detected by Nuclei