CVE-2009-0559: Microsoft Office

High severity, CVSS 9.3. EPSS: 29.4% chance of exploitation in the next 30 days.

Stack-based buffer overflow in Excel in Microsoft Office 2000 SP3 and Office XP SP3 allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "String Copy Stack-Based Overrun Vulnerability."

Affected products

• Microsoft Office: version 2004 only; version 2008 only; version xp only
• Microsoft Office Compatibility Pack For Word Excel Ppt 2007: any version
• Microsoft Office Excel: version 2000 only; version 2003 only; version 2007 only
• Microsoft Office Excel Viewer: any version; version 2003 only
• Microsoft Office SharePoint Server: version 2007 only
• Microsoft Open XML File Format Converter: any version

Published 2009-06-10. Last modified 2026-06-16.