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CVE-2025-53779: Windows Kerberos Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-12 · updated 2026-06-17
• Weakness: CWE-23

Description

Relative path traversal in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

Affected products

• Microsoft Windows Server 2025: before 10.0.26100.4851 — fixed in 10.0.26100.4851
• Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.4946 — fixed in 10.0.26100.4946

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2025 10.0.26100.4851; Microsoft Windows Server 2025 10.0.26100.4946. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53779

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