CVE-2007-1239: Microsoft Excel

Medium severity, CVSS 4.3. EPSS: 12.2% chance of exploitation in the next 30 days.

Microsoft Excel 2003 does not properly parse .XLS files, which allows remote attackers to cause a denial of service (application crash) via a file with a (1) corrupted XML format or a (2) corrupted XLS format, which triggers a NULL pointer dereference.

Affected products

• Microsoft Excel: version 2003 only

Published 2007-03-03. Last modified 2026-06-16.