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Description

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

PUBLISHED Reserved 2026-02-11 | Published 2026-04-14 | Updated 2026-06-01 | Assigner microsoft




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-20: Improper Input Validation

Product status

7.4.0 (custom) before 7.4.14
affected

7.5.0 (custom) before 7.5.5
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26143 (Microsoft PowerShell Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-26143)

nvd.nist.gov (CVE-2026-26143)

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