CVE-2026-20854 HIGH

CVE-2026-20854: Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability

Vendor Microsoft
Product Windows 11 Version 24H2
Weakness CWE-416
Published January 13, 2026
Last update April 1, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/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

Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to execute code over a network.

Key dates

02Disclosure timeline

January 13, 2026 CVE published
April 1, 2026 Record updated