CVE-2011-1273: Microsoft Excel

High severity, CVSS 9.3. EPSS: 17% chance of exploitation in the next 30 days.

Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004, 2008, and 2011 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 do not properly validate record information during parsing of Excel spreadsheets, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted spreadsheet, aka "Excel Improper Record Parsing Vulnerability."

Affected products

• Microsoft Excel: version 2002 only; version 2003 only; version 2007 only; version 2010 only
• Microsoft Excel Viewer: any version
• Microsoft Office: version 2004 only; version 2008 only; version 2011 only
• Microsoft Office Compatibility Pack: version 2007 only
• Microsoft Open XML File Format Converter: any version

Published 2011-06-16. Last modified 2026-06-16.