CVE-2026-11623

June 9, 2026, 1:33 p.m.

1.1
Low

Description

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.

Product(s) Impacted

Vendor Product Versions
Tmux
  • Tmux
  • *, <3.6a, 3.7-rc

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a tmux tmux / / / / / / / /
a tmux tmux <3.6a / / / / / /
a tmux tmux 3.7-rc / / / / / / /

References

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

Tags

CWE-119
[email protected]
2026-06-09
CVE-2026-11623

CVSS Score

1.1 / 10

CVSS Data - 4.0

  • Attack Vector: LOCAL
  • Attack Complexity: HIGH
  • Attack Requirements: NONE
  • Privileges Required: LOW
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: LOW
  • Exploit Maturity: PROOF_OF_CONCEPT

    • CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

    View Vector String

Timeline

Published: June 9, 2026, 5:16 a.m.
Last Modified: June 9, 2026, 1:33 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.