CVE-2009-0558: Microsoft Office

High severity, CVSS 9.3. EPSS: 31.1% chance of exploitation in the next 30 days.

Array index error in Excel in Microsoft Office 2000 SP3 and Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac, allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Array Indexing Memory Corruption 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.