CVE-2026-70338: Microsoft PowerShell

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft PowerShell: from 7.4, before 7.4.19.0 (fixed in 7.4.19.0); from 7.5, before 7.5.10.0 (fixed in 7.5.10.0); from 7.6, before 7.6.5 (fixed in 7.6.5)

Published 2026-08-11. Last modified 2026-08-14.