CVE-2026-26143 HIGH

CVE-2026-26143: Microsoft PowerShell Security Feature Bypass Vulnerability

Vendor Microsoft
Product PowerShell 7.4
Weakness CWE-20 · Input validation
Published April 14, 2026
Last update June 1, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

Key dates

02Disclosure timeline

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