CVE-2026-96303: Microsoft PowerShell 7.4

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.

Affected products

• Microsoft PowerShell 7.4: from 7.4.0, before 7.4.21 (fixed in 7.4.21)
• Microsoft PowerShell 7.5: from 7.5.0, before 7.5.12 (fixed in 7.5.12)
• Microsoft PowerShell 7.6: from 7.6.0, before 7.6.7 (fixed in 7.6.7)

Published 2026-10-13. Last modified 2026-10-13.