CVE-2015-1701: Microsoft Win32k Privilege Escalation Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-03-03. EPSS: 55.9% chance of exploitation in the next 30 days.

Win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 allows local users to gain privileges via a crafted application, as exploited in the wild in April 2015, aka "Win32k Elevation of Privilege Vulnerability."

Affected products

• Microsoft Windows 2003 Server: affected versions not specified; version r2 only
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified
• Microsoft Windows Vista: affected versions not specified

Published 2015-04-21. Last modified 2026-08-14.