CVE-2025-47979

Microsoft Failover Cluster Information Disclosure Vulnerability

CVE-2025-47979 is fixed in 3 products on 1 platform, first by KB5066780, released October 14, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0062

49th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1913	KB5066780	Oct 14, 2025
Windows Server 2025		KB5066835	Oct 14, 2025
Windows Server 2025 (Server Core installation)		KB5066835	Oct 14, 2025

Details

Published
October 14, 2025
Weakness
Insertion of Sensitive Information into Log File
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47979

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