CVE-2026-26143

Microsoft PowerShell Security Feature Bypass Vulnerability

Published Apr 14, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
Title Microsoft PowerShell Security Feature Bypass Vulnerability
First Time appeared Microsoft
Microsoft powershell
Weaknesses CWE-20
CPEs cpe:2.3:a:microsoft:powershell:*:-:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft powershell
References
Metrics cvssV3_1

{'score': 7.8, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Oct 15, 2026, 3:53 PM
Reserved
Feb 11, 2026, 4:24 PM
Status
Analyzed
Published
Apr 14, 2026, 6:16 PM
Modified
Oct 26, 2026, 9:10 PM