CVE-2025-26647 HIGH

CVE-2025-26647: Windows Kerberos Elevation of Privilege Vulnerability

Vendor Microsoft
Product Windows Server 2008 R2 Service Pack 1
Weakness CWE-20 · Input validation
Published April 8, 2025
Last update February 13, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

April 8, 2025 CVE published
February 13, 2026 Record updated