CVE-2013-3907: Microsoft Windows 7

High severity, CVSS 7.2. EPSS: 1.8% chance of exploitation in the next 30 days.

portcls.sys in the kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT allows local users to gain privileges via a crafted application, aka "Port-Class Driver Double Fetch Vulnerability."

Affected products

• Microsoft Windows 7: any version
• Microsoft Windows 8: affected versions not specified
• Microsoft Windows Rt: affected versions not specified
• Microsoft Windows Server 2008: any version
• Microsoft Windows Server 2012: affected versions not specified
• Microsoft Windows Vista: any version

Published 2013-12-11. Last modified 2026-06-16.