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TI-2025-30366 Aliases CVE-2025-47979GHSA-587g-jwv5-52j3

Microsoft Failover Cluster Information Disclosure Vulnerability

Priority LOW 26CWE-532Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0062 49th percentileScored 2026-11-07
Fix Fixed Microsoft: 2 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.191310.0.25398.1913Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.689910.0.26100.6899Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.689910.0.26100.6899Patch availableCNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.1913 Fixed in 10.0.25398.1913 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.6899 Fixed in 10.0.26100.6899 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.6899 Fixed in 10.0.26100.6899 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.1913VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*up to 10.0.26100.6899VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.1913 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions up to 10.0.26100.6899 Vulnerable ·Microsoft

Remediation

Microsoft 2 updates

  • KB5066835
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.6899
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.6899
    • Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.6899
    • Windows 11 Version 25H2 for x64-based Systems 10.0.26200.6899
    • Windows Server 2025 10.0.26100.6899
    • Windows Server 2025 (Server Core installation) 10.0.26100.6899
  • KB5066780
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1913

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Information Disclosure
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-47979
  2. 2026-10-03 Alias added: GHSA-587g-jwv5-52j3

References

Patch 1

  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1675 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences