Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
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
FAQ
What is CVE-2026-11623?
CVE-2026-11623 is a vulnerability with a CVSS score of 4.5 (MEDIUM). 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 ...
How severe is CVE-2026-11623?
CVE-2026-11623 has been rated MEDIUM with a CVSS base score of 4.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-11623?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.