Vulnerability details
CVE-2025-49844
Redis Redis
Redis Lua Use-After-Free may lead to remote code execution
CVSS 3.1
10.0Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Redis | Redis | < 8.2.2 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q x_refsource_CONFIRM
- https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539 x_refsource_MISC
- https://github.com/redis/redis/releases/tag/8.2.2 x_refsource_MISC
- https://github.com/lastvocher/redis-CVE-2025-49844 exploit
- http://www.openwall.com/lists/oss-security/2025/10/07/2
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Details
- Published
- 2025-10-03
- Last updated
- 2026-03-20
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 60 · Medium
Exploit prediction (EPSS)
82.63%
Probability of exploitation in 30 days
99.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-416Use After Free