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
Updated2026-08-31 20:17:12 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.

Risk And Classification

Primary CVSS: v4.0 7.5 HIGH from 9119a7d8-5eab-497f-8521-727c672e3725

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

EPSS: 0.004350000 probability, percentile 0.363920000 (date 2026-09-02)

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

VersionSourceTypeScoreSeverityVector
4.09119a7d8-5eab-497f-8521-727c672e3725Secondary7.5HIGHCVSS: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/C...
4.0CNADECLARED7.5HIGHCVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.19119a7d8-5eab-497f-8521-727c672e3725Secondary7.1HIGHCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0 Breakdown

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

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

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
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
CNA Redis Redis unaffected 7.4.11 Not specified
CNA Redis Redis unaffected 6.2.24 Not specified
CNA Redis Redis unaffected 7.2.16 Not specified
CNA Redis Redis affected 8.8.2 custom Not specified
CNA Redis Redis affected 8.2.9 custom Not specified
CNA Redis Redis affected 8.4.6 custom Not specified
CNA Redis Redis affected 8.6.6 custom Not specified
CNA Redis Redis affected 8.10.1 custom Not specified
CNA Redis Redis affected 7.4.11 custom Not specified
CNA Redis Redis affected 6.2.24 custom Not specified
CNA Redis Redis affected 7.2.16 custom Not specified
CNA Redis Redis Software Enterprise unaffected 8.2.0-46 Not specified
CNA Redis Redis Software Enterprise unaffected 8.0.20-96 Not specified
CNA Redis Redis Software Enterprise unaffected 7.22.2-179 Not specified
CNA Redis Redis Software Enterprise unaffected 7.8.6-303 Not specified
CNA Redis Redis Software Enterprise affected 8.2.0-46 custom Not specified
CNA Redis Redis Software Enterprise affected 8.0.20-96 custom Not specified
CNA Redis Redis Software Enterprise affected 7.22.2-179 custom Not specified
CNA Redis Redis Software Enterprise affected 7.8.6-303 custom Not specified

References

ReferenceSourceLinkTags
raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
www.cve.org/CVERecord 9119a7d8-5eab-497f-8521-727c672e3725 www.cve.org
raw.githubusercontent.com/redis/redis/7.2/00-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
redis.io/docs/latest/operate/rs/release-notes/rs-7-8-releases/rs-7-8-6... 9119a7d8-5eab-497f-8521-727c672e3725 redis.io
raw.githubusercontent.com/redis/redis/6.2/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
github.com/redis/redis/releases/tag/8.10.1 9119a7d8-5eab-497f-8521-727c672e3725 github.com
github.com/redis/redis/releases/tag/8.2.9 9119a7d8-5eab-497f-8521-727c672e3725 github.com
raw.githubusercontent.com/redis/redis/7.4/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
github.com/redis/redis/releases/tag/8.6.6 9119a7d8-5eab-497f-8521-727c672e3725 github.com
github.com/redis/redis/releases/tag/8.4.6 9119a7d8-5eab-497f-8521-727c672e3725 github.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/releases/tag/6.2.24 9119a7d8-5eab-497f-8521-727c672e3725 github.com
github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834 9119a7d8-5eab-497f-8521-727c672e3725 github.com
redis.io/docs/latest/operate/rs/release-notes/rs-8-2-releases/rs-8-2-0-46 9119a7d8-5eab-497f-8521-727c672e3725 redis.io
github.com/redis/redis/releases/tag/8.8.2 9119a7d8-5eab-497f-8521-727c672e3725 github.com
redis.io/docs/latest/operate/rs/release-notes/rs-8-0-releases/rs-8-0-2... 9119a7d8-5eab-497f-8521-727c672e3725 redis.io
github.com/redis/redis/releases/tag/7.2.16 9119a7d8-5eab-497f-8521-727c672e3725 github.com
raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
github.com/redis/redis/releases/tag/7.4.11 9119a7d8-5eab-497f-8521-727c672e3725 github.com
raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-239-01.json 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
redis.io/docs/latest/operate/rs/release-notes/rs-7-22-releases/rs-7-22... 9119a7d8-5eab-497f-8521-727c672e3725 redis.io
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