CVE-2026-81934

critical

Description

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. Fixed in Redis 8.2.9, 8.4.6, 8.6.6, 8.8.2, and 8.10.1.

References

https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES

https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES

https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES

https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES

https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES

https://github.com/v12-security/pocs/tree/main/redis/server_ssl

https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834

Details

Source: Mitre, NVD

Published: 2026-08-27

Updated: 2026-08-28

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.2

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.00585