CVE-2002-1561: Microsoft Windows 2000

Medium severity, CVSS 5.0. EPSS: 37.7% chance of exploitation in the next 30 days.

The RPC component in Windows 2000, Windows NT 4.0, and Windows XP allows remote attackers to cause a denial of service (disabled RPC service) via a malformed packet to the RPC Endpoint Mapper at TCP port 135, which triggers a null pointer dereference.

Affected products

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

Published 2003-04-02. Last modified 2026-06-16.