CVE-2010-0261: Microsoft Excel

High severity, CVSS 9.3. EPSS: 23.1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Microsoft Office Excel 2007 SP1 and SP2 and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a crafted spreadsheet in which "a MDXSET record is broken up into several records," aka "Microsoft Office Excel MDXSET Record Heap Overflow Vulnerability."

Affected products

• Microsoft Excel: version 2002 only; version 2003 only; version 2007 only
• Microsoft Office: version 2004 only; version 2008 only
• Microsoft Office Compatibility Pack: version 2007 only
• Microsoft Office Excel Viewer: any version
• Microsoft Office SharePoint Server: version 2007 only
• Microsoft Open XML File Format Converter: any version

Published 2010-03-10. Last modified 2026-06-16.