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Vulnerability record · CVE-2026-81934 · published 27 August 2026

CVE-2026-81934: Use after free vulnerability

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.

7.5 CVSS 4.0 High EPSS 0.48% · top 61.1% CWE-416 · Use after free Awaiting Analysis
7.5CVSS 4.0 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
24References
31 Aug 2026Last modified by NVD

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.

CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834
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/8.10.1
https://github.com/redis/redis/releases/tag/8.2.9
https://github.com/redis/redis/releases/tag/8.4.6
https://github.com/redis/redis/releases/tag/8.6.6
https://github.com/redis/redis/releases/tag/8.8.2
https://github.com/v12-security/pocs/tree/main/redis/server_ssl
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-239-01.json
https://raw.githubusercontent.com/redis/redis/6.2/00-RELEASENOTES
https://raw.githubusercontent.com/redis/redis/7.2/00-RELEASENOTES
https://raw.githubusercontent.com/redis/redis/7.4/00-RELEASENOTES
https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES
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://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://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-8-2-releases/rs-8-2-0-46/
https://www.cve.org/CVERecord?id=CVE-2026-81934

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Source: NIST National Vulnerability Database (record CVE-2026-81934), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.