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CVE-2025-49844
Good to know:
Date: October 3, 2025
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.
Severity Score
Related Resources (5)
Severity Score
Weakness Type (CWE)
Use After Free
CWE-416Top Fix
Upgrade Version
Upgrade to version https://github.com/redis/redis.git - 8.2.2;https://github.com/redis/redis.git - 8.0.4;https://github.com/redis/redis.git - 7.4.6;https://github.com/redis/redis.git - 7.2.11;https://github.com/redis/redis.git - 6.2.20
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | CHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | HIGH |