Redis up to 8.6.2 Data Structure processCommandAndResetClient use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.93

Summaryinfo

A vulnerability, which was classified as critical, was found in Redis up to 8.6.2. The affected element is the function processCommandAndResetClient of the component Data Structure Handler. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2026-23479. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Redis up to 8.6.2 and classified as critical. Affected by this issue is the function processCommandAndResetClient of the component Data Structure Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-23479 since 01/13/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 315122 (Fedora 42 : valkey (2026-114b1e5d3a)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.6.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (315122), EUVD (EUVD-2026-27396) and CERT Bund (WID-SEC-2026-1370). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Microsoft Azure Linux
  • Open Source Redis

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 315122
Nessus Name: Fedora 42 : valkey (2026-114b1e5d3a)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Redis 8.6.3

Timelineinfo

01/13/2026 CVE reserved
05/05/2026 +111 days Advisory disclosed
05/05/2026 +0 days VulDB entry created
07/02/2026 +58 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-23479 (🔒)
GCVE (CVE): GCVE-0-2026-23479
GCVE (VulDB): GCVE-100-361202
EUVD: 🔒
CERT Bund: WID-SEC-2026-1370 - Redis: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode

Entryinfo

Created: 05/05/2026 19:11
Updated: 07/02/2026 17:53
Changes: 05/05/2026 19:11 (68), 05/05/2026 20:40 (1), 05/18/2026 08:24 (2), 06/15/2026 13:50 (7), 06/26/2026 03:40 (1), 07/02/2026 17:53 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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