Out-of-bounds Read in Redis
CVE-2025-46819
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 read out-of-bound data or crash the server and subsequent denial of service. 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 block a script by restricting both the EVAL and FUNCTION command families.
Vulnerability class: Integer Overflow
EPSS: 0.010 (60.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Redis — versions < 8.2.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mitigation, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-46819?
- CVE-2025-46819 is a medium-severity vulnerability in Redis, classified under Integer Overflow or Wraparound. CVSS score: 6.3/10. Published 2025-10-03.
- How severe is CVE-2025-46819?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2025-46819 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.