CVE-2009-1546: Microsoft Windows 2003 Server

High severity, CVSS 8.5. EPSS: 22.5% chance of exploitation in the next 30 days.

Integer overflow in Avifil32.dll in the Windows Media file handling functionality in Microsoft Windows allows remote attackers to execute arbitrary code on a Windows 2000 SP4 system via a crafted AVI file, or cause a denial of service on a Windows XP SP2 or SP3, Server 2003 SP2, Vista Gold, SP1, or SP2, or Server 2008 Gold or SP2 system via a crafted AVI file, aka "AVI Integer Overflow Vulnerability."

Affected products

• Microsoft Windows 2003 Server: version sp2 only
• Microsoft Windows Server 2008: any version; affected versions not specified
• Microsoft Windows Vista: any version; affected versions not specified
• Microsoft Windows XP: any version; affected versions not specified

Published 2009-08-12. Last modified 2026-06-16.