CVE-2011-0105: Microsoft Excel

High severity, CVSS 9.3. EPSS: 70.2% chance of exploitation in the next 30 days.

Microsoft Excel 2002 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac obtain a certain length value from an uninitialized memory location, which allows remote attackers to trigger a buffer overflow and execute arbitrary code via a crafted Excel file, aka "Excel Data Initialization Vulnerability."

Affected products

• Microsoft Excel: version 2002 only
• Microsoft Office: version 2004 only; version 2008 only
• Microsoft Open XML File Format Converter: any version

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