CVE-2009-4309: Microsoft Windows 2000

High severity, CVSS 9.3. EPSS: 24.1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the Intel Indeo41 codec for Windows Media Player in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote attackers to execute arbitrary code via a large size value in a movi record in an IV41 stream in a media file, as demonstrated by an AVI file.

Affected products

• Microsoft Windows 2000: any version
• Microsoft Windows 2003 Server: any version
• Microsoft Windows Media Player: any version
• Microsoft Windows XP: any version; affected versions not specified

Published 2009-12-13. Last modified 2026-06-16.