Vulnerability Intelligence Report
Microsoft PowerShell Security Feature Bypass Vulnerability
CVE-2026-26143
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
No Active Exploit Signals
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:0.54%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-20 ↗CWE-20: Improper Input Validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | PowerShell 7.4 | 7.4.0 < 7.4.14 (affected) |
| Microsoft | PowerShell 7.5 | 7.5.0 < 7.5.5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.536%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-02-11T16:24:51 |
| Published | 2026-04-14T16:57:53 |
| Patch Date | 2026-04-14 |
| Last Updated | 2026-08-14T16:30:50 |
Community Chatter & Buzz