CVE-2010-3238: Microsoft Excel

High severity, CVSS 9.3. EPSS: 21% chance of exploitation in the next 30 days.

Microsoft Excel 2002 SP3 and 2003 SP3, and Office 2004 for Mac, does not properly validate binary file-format information, which allows remote attackers to execute arbitrary code via a crafted Excel document, aka "Negative Future Function Vulnerability."

Affected products

• Microsoft Excel: version 2002 only; version 2003 only
• Microsoft Office: version 2004 only

Published 2010-10-13. Last modified 2026-06-16.