CVE-2009-3135: Microsoft Office

High severity, CVSS 9.3. EPSS: 35.8% chance of exploitation in the next 30 days.

Stack-based buffer overflow in Microsoft Office Word 2002 SP3 and 2003 SP3, Office 2004 and 2008 for Mac, Open XML File Format Converter for Mac, Office Word Viewer 2003 SP3, and Office Word Viewer allow remote attackers to execute arbitrary code via a Word document with a malformed File Information Block (FIB) structure, aka "Microsoft Office Word File Information Memory Corruption Vulnerability."

Affected products

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

Published 2009-11-11. Last modified 2026-06-16.