CVE-2025-59188

Microsoft Failover Cluster Information Disclosure Vulnerability

State: Published
Severity: 5.5 Medium
Published: Oct 14, 2025
Updated: Feb 22, 2026
Reserved: Sep 10, 2025

Description

Exposure of sensitive information to an unauthorized actor in Windows Failover Cluster allows an authorized attacker to disclose information locally.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.25722Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.25722Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22824Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22824Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.8519Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.8519Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7919Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7919Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.4294Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1913Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.6899Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.6899Affected

References

Microsoft Failover Cluster Information Disclosure Vulnerabilityvendor-advisorypatch

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