CVE-2003-0806: Microsoft Windows 2000

High severity, CVSS 7.5. EPSS: 33.1% chance of exploitation in the next 30 days.

Buffer overflow in the Windows logon process (winlogon) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, and XP SP1, when a member of a domain, allows remote attackers to execute arbitrary code.

Affected products

• Microsoft Windows 2000: any version
• Microsoft Windows Nt: version 4.0 only
• Microsoft Windows XP: any version

Published 2004-06-01. Last modified 2026-06-16.