CVE-2026-11623

A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.

CVSS v3 4.5 MEDIUM
CVSS v2.0 3.5 LOW

4.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:H/Au:S/C:P/I:P/A:P

Exploitability : 1.5 / Impact : 6.4

Access Vector LOCAL

Access Complexity HIGH

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://gist.github.com/XlabAITeam/f0d9952595f795129a3258ba73bbc3cb
https://github.com/tmux/tmux/
https://github.com/tmux/tmux/commit/fc6d94a9f8a593bd8b7031650802084385d4ee03
https://github.com/tmux/tmux/releases/tag/3.7-rc
https://vuldb.com/cve/CVE-2026-11623
https://vuldb.com/submit/835623
https://vuldb.com/vuln/369303
https://vuldb.com/vuln/369303/cti

Configurations

No configuration.

History

09 Jun 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-09 05:16

Updated : 2026-06-09 13:33

NVD link : CVE-2026-11623

Mitre link : CVE-2026-11623

CVE.ORG link : CVE-2026-11623

JSON object : View

Products Affected

No product.

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-416

Use After Free

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