CVE-2011-0034: Microsoft Windows 2003 Server

High severity, CVSS 9.3. EPSS: 27.9% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the OpenType Compact Font Format (aka OTF or CFF) driver in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via crafted parameter values in an OpenType font, aka "OpenType Font Stack Overflow Vulnerability."

Affected products

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

Published 2011-04-13. Last modified 2026-06-16.