CVE-2007-4247: Microsoft Windows Vista

Medium severity, CVSS 4.3. EPSS: 14.7% chance of exploitation in the next 30 days.

Windows Calendar on Microsoft Windows Vista allows remote attackers to cause a denial of service (NULL dereference and persistent application crash) via a malformed ICS file.

Affected products

• Microsoft Windows Vista: any version

Published 2007-08-08. Last modified 2026-06-16.