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CVE-2025-49844

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

CVSS 10 critical · redis redis · published 2025-10-03

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.

Coverage 1 source

  1. 2026-03-24 CISA Cybersecurity Advisories critical Schneider Electric Plant iT/Brewmaxx

    Schneider Electric Plant iT/Brewmaxx versions 9.60 and above have multiple vulnerabilities with a CVSS score of 9.9.

Mentioned with

CVE-2025-46817 CVE-2025-46818 CVE-2025-46819

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