CVE-2025-49844
Redis Lua Use-After-Free may lead to remote code execution
CVSS Score
10.0
EPSS Score
12.4%
EPSS Percentile
94th
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.
| CWE | CWE-416 |
| Vendor | redis |
| Product | redis |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 3, 2025 |
| Last Updated | Mar 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
redis / redis
< 8.2.2
References
github.com: https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q github.com: https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539 github.com: https://github.com/redis/redis/releases/tag/8.2.2 github.com: https://github.com/lastvocher/redis-CVE-2025-49844 openwall.com: http://www.openwall.com/lists/oss-security/2025/10/07/2