CVE-2011-0104: Microsoft Excel

High severity, CVSS 9.3. EPSS: 53.4% chance of exploitation in the next 30 days.

Microsoft Excel 2002 SP3 and 2003 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted HLink record in an Excel file, aka "Excel Buffer Overwrite Vulnerability."

Affected products

• Microsoft Excel: version 2002 only; version 2003 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.