CVE-2008-4266: Microsoft Excel

High severity, CVSS 9.3. EPSS: 27.6% chance of exploitation in the next 30 days.

Array index vulnerability in Microsoft Office Excel 2000 SP3, 2002 SP3, and 2003 SP3; Excel Viewer 2003 Gold and SP3; Office 2004 and 2008 for Mac; and Open XML File Format Converter for Mac allow remote attackers to execute arbitrary code via an Excel spreadsheet with a NAME record that contains an invalid index value, which triggers stack corruption, aka "Excel Global Array Memory Corruption Vulnerability."

Affected products

• Microsoft Excel: version 2000 only; version 2002 only; version 2003 only
• Microsoft Excel Viewer: version 2003 only
• Microsoft Office: version 2004 only; version 2008 only
• Microsoft Open XML File Format Converter: any version

Published 2008-12-10. Last modified 2026-06-16.