CVE-2009-1134: Microsoft Office

High severity, CVSS 9.3. EPSS: 35.7% chance of exploitation in the next 30 days.

Excel in 2007 Microsoft Office System SP1 and SP2; Microsoft Office Excel Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allow remote attackers to execute arbitrary code via a BIFF file with a malformed Qsir (0x806) record object, aka "Record Pointer 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.