Redis TLS pending-data list use-after-free

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81934
StatePUBLISHED
Assignercisa-cg
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-27 20:18:57 UTC
Updated2026-08-27 20:18:57 UTC
DescriptionRedis 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.

Risk And Classification

Primary CVSS: v4.0 9.2 CRITICAL from 9119a7d8-5eab-497f-8521-727c672e3725

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/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:X/V:X/RE:X/U:X

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
4.09119a7d8-5eab-497f-8521-727c672e3725Secondary9.2CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED9.2CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.19119a7d8-5eab-497f-8521-727c672e3725Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/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:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Redis Redis affected 8.8.0 Not specified
CNA Redis Redis unaffected 8.2.9 Not specified
CNA Redis Redis unaffected 8.4.6 Not specified
CNA Redis Redis unaffected 8.6.6 Not specified
CNA Redis Redis unaffected 8.8.2 Not specified
CNA Redis Redis unaffected 8.10.1 Not specified

References

ReferenceSourceLinkTags
raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
github.com/v12-security/pocs/tree/main/redis/server_ssl 9119a7d8-5eab-497f-8521-727c672e3725 github.com
github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834 9119a7d8-5eab-497f-8521-727c672e3725 github.com
raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
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