What is CVE-2026-11623?

CVE-2026-11623 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. tmux image.c image_free use after free

Which CVE IDs does CVE-2026-11623 cover?

CVE-2026-11623 covers the following CVE IDs: CVE-2026-11623. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-11623?

CVE-2026-11623 has a CVSS v3 base score of 4.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-11623?

CVE-2026-11623 affects 2 products, including: azl3 tmux 3.4-1 on Azure Linux 3.0; azl3 tmux 3.4-2 on Azure Linux 3.0.

CVE-2026-11623LowCVSS 4.5

tmux image.c image_free use after free

Vendor

Microsoft Security Response Center (MSRC)

Published

June 26, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-11623 →

🎯 Affected products2

azl3 tmux 3.4-1 on Azure Linux 3.0
azl3 tmux 3.4-2 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 3.4-2

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-11623
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade