What is CVE-2026-11623?

CVE-2026-11623 is a medium-severity vulnerability, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.5/10. Published 2026-06-09.

How severe is CVE-2026-11623?

Medium severity. CVSS v3 base score is 4.5 out of 10.

CVE-2026-11623

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 characteriz…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-416 — Use After Free

References

cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com

Frequently asked questions

What is CVE-2026-11623?: CVE-2026-11623 is a medium-severity vulnerability, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.5/10. Published 2026-06-09.
How severe is CVE-2026-11623?: Medium severity. CVSS v3 base score is 4.5 out of 10.