What is CVE-2025-47979?

CVE-2025-47979 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Failover Cluster Information Disclosure Vulnerability

Which CVE IDs does CVE-2025-47979 cover?

CVE-2025-47979 covers the following CVE IDs: CVE-2025-47979. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-47979?

CVE-2025-47979 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-47979?

CVE-2025-47979 affects 3 products, including: Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).

CVE-2025-47979HighCVSS 5.5

Microsoft Failover Cluster Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 14, 2025

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-47979 →

📋 Description

Insertion of sensitive information into log file in Windows Failover Cluster allows an authorized attacker to disclose information locally.

🎯 Affected products3

Windows Server 2022, 23H2 Edition (Server Core installation)
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5066835 (Security Update) — fixed build 10.0.26100.6899 KB5066780 (Security Update) — fixed build 10.0.25398.1913

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47979
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066835
referencehttps://support.microsoft.com/help/5066835
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066780
referencehttps://support.microsoft.com/help/5066780