CVE-2026-26143 (GCVE-0-2026-26143)

Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-06-01 19:12
VLAI
Title
Microsoft PowerShell Security Feature Bypass Vulnerability
Summary
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
Severity
7.8 (High)
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Microsoft PowerShell 7.4 Affected: 7.4.0 , < 7.4.14 (custom)
Create a notification for this product.
Microsoft PowerShell 7.5 Affected: 7.5.0 , < 7.5.5 (custom)
Create a notification for this product.
Date Public
2026-04-14 14:00
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.