What is CVE-2026-59843?

CVE-2026-59843 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Libssh: libssh: denial of service via zero advertised channel packet size

Which CVE IDs does CVE-2026-59843 cover?

CVE-2026-59843 covers the following CVE IDs: CVE-2026-59843. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-59843?

CVE-2026-59843 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-59843?

CVE-2026-59843 affects 2 products, including: azl3 libssh 0.10.6-8 on Azure Linux 3.0; azl3 libssh 0.10.6-9 on Azure Linux 3.0.

CVE-2026-59843MediumCVSS 6.5

Libssh: libssh: denial of service via zero advertised channel packet size

Vendor

Microsoft Security Response Center (MSRC)

Published

July 27, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-59843 →

🎯 Affected products2

azl3 libssh 0.10.6-8 on Azure Linux 3.0
azl3 libssh 0.10.6-9 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 0.10.6-9

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59843
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade