CVE-2015-1651: Microsoft Office Compatibility Pack

High severity, CVSS 9.3. EPSS: 16.5% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Microsoft Word 2007 SP3, Word Viewer, and Office Compatibility Pack SP3 allows remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Component Use After Free Vulnerability."

Affected products

• Microsoft Office Compatibility Pack: any version
• Microsoft Word: version 2007 only
• Microsoft Word Viewer: any version

Published 2015-04-14. Last modified 2026-06-17.