CVE-2011-3401: Microsoft Windows 7

High severity, CVSS 9.3. EPSS: 20.7% chance of exploitation in the next 30 days.

ENCDEC.DLL in Windows Media Player and Media Center in Microsoft Windows XP SP2 and SP3, Windows Vista SP2, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .dvr-ms file, aka "Windows Media Player DVR-MS Memory Corruption Vulnerability."

Affected products

• Microsoft Windows 7: affected versions not specified
• Microsoft Windows Vista: any version
• Microsoft Windows XP: any version; affected versions not specified; version 2005 only

Published 2011-12-14. Last modified 2026-06-16.