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CVE-2026-81934NVD
Vulnerability Summary
Redis contains a use-after-free vulnerability in the 'tlsProcessPendingData()' function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server.
CVSS v4.0 Base Metrics — Score 7.5 (HIGH)
Attack VectorAdjacent
Attack ComplexityHigh
Attack RequirementsPresent
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
CVSS v3.1 Base Metrics — Score 7.1 (HIGH)
Attack VectorAdjacent
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Redis Redis < 8.8.2
- Redis Redis < 8.2.9
- Redis Redis < 8.4.6
- Redis Redis < 8.6.6
- Redis Redis < 8.10.1
- Redis Redis < 7.4.11
- Redis Redis < 6.2.24
- Redis Redis < 7.2.16
- Redis Redis Software (Enterprise) < 8.2.0-46
- Redis Redis Software (Enterprise) < 8.0.20-96
- Redis Redis Software (Enterprise) < 7.22.2-179
- Redis Redis Software (Enterprise) < 7.8.6-303
- Redis Redis 8.8.2
- Redis Redis 8.2.9
- Redis Redis 8.4.6
- Redis Redis 8.6.6
- Redis Redis 8.10.1
- Redis Redis 7.4.11
- Redis Redis 6.2.24
- Redis Redis 7.2.16
- Redis Redis Software (Enterprise) 8.2.0-46
- Redis Redis Software (Enterprise) 8.0.20-96
- Redis Redis Software (Enterprise) 7.22.2-179
- Redis Redis Software (Enterprise) 7.8.6-303
External References
- https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834
- https://github.com/v12-security/pocs/tree/main/redis/server_ssl
- https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-239-01.json
- https://www.cve.org/CVERecord?id=CVE-2026-81934
- https://github.com/redis/redis/releases/tag/6.2.24
- https://github.com/redis/redis/releases/tag/7.2.16
- https://github.com/redis/redis/releases/tag/7.4.11
- https://github.com/redis/redis/releases/tag/8.4.6
- https://github.com/redis/redis/releases/tag/8.2.9
- https://github.com/redis/redis/releases/tag/8.6.6
- https://github.com/redis/redis/releases/tag/8.8.2
- https://github.com/redis/redis/releases/tag/8.10.1
- https://redis.io/docs/latest/operate/rs/release-notes/rs-8-2-releases/rs-8-2-0-46/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-8-0-releases/rs-8-0-20-96/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-7-22-releases/rs-7-22-2-179/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-7-8-releases/rs-7-8-6-303/
- https://raw.githubusercontent.com/redis/redis/7.4/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/7.2/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/6.2/00-RELEASENOTES