CVE-2008-1434: Microsoft Office

High severity, CVSS 9.3. EPSS: 30.9% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Microsoft Word in Office 2000 and XP SP3, 2003 SP2 and SP3, and 2007 Office System SP1 and earlier allows remote attackers to execute arbitrary code via an HTML document with a large number of Cascading Style Sheets (CSS) selectors, related to a "memory handling error" that triggers memory corruption.

Affected products

• Microsoft Office: version 2000 only; version 2003 only; version 2004 only; version 2007 only; version 2007_sp1 only; version 2008 only; …
• Microsoft Office Compatibility Pack For Word Excel Ppt 2007: any version
• Microsoft Word Viewer: version 2003 only

Published 2008-05-13. Last modified 2026-06-16.