CVE-2025-49844
CRITICALCVSS v3
9.9
CRITICAL
EPSS Score
17.1%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical Details
- Published
- 10/3/2025
Frequently Asked Questions
What is CVE-2025-49844?
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.
Is CVE-2025-49844 actively exploited?
Active exploitation of CVE-2025-49844 has not been confirmed. The EPSS score is 17.1%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-49844?
CVE-2025-49844 has a CVSS v3 base score of 9.9 (CRITICAL severity).
Is CVE-2025-49844 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.