CVE-2025-26647

HIGH

Windows Server 2008-2025 Privilege Escalation via Kerberos Input Validation

Title source: llm

Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

Core 1

Core References

Vendor Advisory vendor-advisory patch

CVSS v3 8.8

EPSS 0.0196

EPSS Percentile 83.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-20

Status published

Products (9)

microsoft/windows_server_2008 (2 CPE variants)

microsoft/windows_server_2008 r2 sp1

microsoft/windows_server_2012

microsoft/windows_server_2012 r2

microsoft/windows_server_2016 < 10.0.14393.7969

microsoft/windows_server_2019 < 10.0.17763.7136

microsoft/windows_server_2022 < 10.0.20348.3453

microsoft/windows_server_2022_23h2 < 10.0.25398.1551

microsoft/windows_server_2025 < 10.0.26100.3775

Published Apr 08, 2025

Tracked Since Feb 18, 2026