CVE-2026-70338

Microsoft PowerShell Security Feature Bypass Vulnerability

State: Published
Severity: 7.8 High
Published: Aug 11, 2026
Updated: Oct 30, 2026
Reserved: Aug 4, 2026

Description

Improper control of generation of code ('code injection') in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

Scores

CVSS	Score	Vector	Source
3.1	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	microsoft

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
PowerShell 7.4Microsoft	7.4.0 to before 7.4.19.0Affected
PowerShell 7.5Microsoft	7.5.0 to before 7.5.10.0Affected
PowerShell 7.6Microsoft	7.6.0 to before 7.6.5Affected

References

Microsoft PowerShell Security Feature Bypass Vulnerabilityvendor-advisorypatch

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