CVE-2000-0331: Microsoft Terminal Server

Medium severity, CVSS 5.0. EPSS: 7.5% chance of exploitation in the next 30 days.

Buffer overflow in Microsoft command processor (CMD.EXE) for Windows NT and Windows 2000 allows a local user to cause a denial of service via a long environment variable, aka the "Malformed Environment Variable" vulnerability.

Affected products

• Microsoft Terminal Server: any version
• Microsoft Windows 2000: any version
• Microsoft Windows Nt: version 4.0 only

Published 2000-04-20. Last modified 2026-06-16.