Use After Free in Redis
CVE-2026-81934
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.
Vulnerability class: Use-After-Free
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Redis — versions 8.8.0
Weakness classification (CWE)
References
- 9119a7d8-5eab-497f-8521-727c672e3725 (patch)
- 9119a7d8-5eab-497f-8521-727c672e3725 (exploit)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (release-notes)
Frequently asked questions
- What is CVE-2026-81934?
- CVE-2026-81934 is a critical-severity vulnerability in Redis, classified under Use After Free. CVSS score: 9.8/10. Published 2026-08-27.
- How severe is CVE-2026-81934?
- Critical severity. CVSS v3 base score is 9.8 out of 10.