CVE-2026-26166 HIGH

CVE-2026-26166: Windows Shell Elevation of Privilege Vulnerability

Vendor Microsoft
Product Windows 11 version 22H3
Weakness CWE-415
Published April 14, 2026
Last update June 1, 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

Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

Key dates

02Disclosure timeline

April 14, 2026 CVE published
June 1, 2026 Record updated