CVE-2002-0971: Att Winvnc Server

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

Vulnerability in VNC, TightVNC, and TridiaVNC allows local users to execute arbitrary code as LocalSystem by using the Win32 Messaging System to bypass the VNC GUI and access the "Add new clients" dialogue box.

Affected products

• Att Winvnc Server: up to and including 3.3.3_r9; version 3.3.3_r7 only
• Tightvnc Tightvnc: version 1.2.0 only; version 1.2.1 only; version 1.2.5 only
• Tridia Tridiavnc: version 1.5 only; version 1.5.1 only; version 1.5.2 only; version 1.5.4 only

Published 2002-09-24. Last modified 2026-06-16.