CVE-2025-21191 HIGH

CVE-2025-21191: Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability

Vendor Microsoft
Product Windows 10 Version 1507
Weakness CWE-367
Published April 8, 2025
Last update February 13, 2026
View on NVD All CVEs

CVSS base score

7.0/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Time-of-check time-of-use (toctou) race condition in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.

Key dates

02Disclosure timeline

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