CVE-2026-70338

Microsoft PowerShell Security Feature Bypass Vulnerability

CVE-2026-70338 is fixed in PowerShell on 1 platform by PowerShell 7.6.5.0 (version 7.6.5.0), released August 14, 2026. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

29th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
PowerShell	7.6.5.0	PowerShell 7.6.5.0	Aug 14, 2026
No fix yet
PowerShell Preview (Windows apps)	No fix yet	no-fix	n/a

Details

Published
August 11, 2026
Weakness
Improper Control of Generation of Code ('Code Injection')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70338

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