CVE-2007-0028: Microsoft Excel

High severity, CVSS 9.3. EPSS: 33.9% chance of exploitation in the next 30 days.

Microsoft Excel 2000, 2002, 2003, Viewer 2003, Office 2004 for Mac, and Office v.X for Mac does not properly handle certain opcodes, which allows user-assisted remote attackers to execute arbitrary code via a crafted XLS file, which results in an "Improper Memory Access Vulnerability." NOTE: an early disclosure of this issue used CVE-2006-3432, but only CVE-2007-0028 should be used.

Affected products

• Microsoft Excel: version 2000 only; version 2002 only; version 2003 only
• Microsoft Excel Viewer: version 2003 only
• Microsoft Office: version 2000 only; version xp only; version 2003 only; version 2004 only; version v.x only
• Microsoft Works: version 2004 only; version 2005 only

Published 2007-01-09. Last modified 2026-06-16.