CVE-2015-2521: Microsoft Excel

High severity, CVSS 9.3. EPSS: 27.7% chance of exploitation in the next 30 days.

Microsoft Excel 2007 SP3, Excel 2010 SP2, Office Compatibility Pack SP3, and Excel Viewer allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."

Affected products

• Microsoft Excel: version 2007 only; version 2010 only
• Microsoft Excel Viewer: any version
• Microsoft Office Compatibility Pack: any version

Published 2015-09-09. Last modified 2026-06-17.