What is CVE-2025-59529?

CVE-2025-59529 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. simple protocol server ignores accepts unlimited connections and logs failures without limit

Which CVE IDs does CVE-2025-59529 cover?

CVE-2025-59529 covers the following CVE IDs: CVE-2025-59529. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-59529?

CVE-2025-59529 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-59529?

CVE-2025-59529 affects 9 products, including: azl3 avahi 0.8-5 on Azure Linux 3.0; azl3 avahi 0.8-6 on Azure Linux 3.0; azl3 avahi 0.8-7 on Azure Linux 3.0; azl3 avahi 0.8-8 on Azure Linux 3.0; azl3 avahi 0.8-9 on Azure Linux 3.0; and others — see the full list on the advisory page.

CVE-2025-59529MediumCVSS 5.5

simple protocol server ignores accepts unlimited connections and logs failures without limit

Vendor

Microsoft Security Response Center (MSRC)

Published

December 21, 2025

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-59529 →

🎯 Affected products9

azl3 avahi 0.8-5 on Azure Linux 3.0
azl3 avahi 0.8-6 on Azure Linux 3.0
azl3 avahi 0.8-7 on Azure Linux 3.0
azl3 avahi 0.8-8 on Azure Linux 3.0
azl3 avahi 0.8-9 on Azure Linux 3.0
cbl2 avahi 0.8-4 on CBL Mariner 2.0
cbl2 avahi 0.8-5
cbl2 avahi 0.8-5 on CBL Mariner 2.0
cbl2 avahi 0.8-5 on CBL-Mariner 2.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59529
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade