What is CVE-2025-15661?

CVE-2025-15661 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c

Which CVE IDs does CVE-2025-15661 cover?

CVE-2025-15661 covers the following CVE IDs: CVE-2025-15661. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-15661?

CVE-2025-15661 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-15661?

CVE-2025-15661 affects 4 products, including: azl3 libssh 0.10.6-8 on Azure Linux 3.0; azl3 libssh2 1.11.1-2 on Azure Linux 3.0; azl3 libssh2 1.11.1-3 on Azure Linux 3.0; azl3 libssh2 1.11.1-4 on Azure Linux 3.0.

CVE-2025-15661MediumCVSS 6.5

libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-15661 →

🎯 Affected products4

azl3 libssh 0.10.6-8 on Azure Linux 3.0
azl3 libssh2 1.11.1-2 on Azure Linux 3.0
azl3 libssh2 1.11.1-3 on Azure Linux 3.0
azl3 libssh2 1.11.1-4 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.11.1-4

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-15661
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade