CVE-2002-1104: Cisco VPN Client

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Cisco Virtual Private Network (VPN) Client software 2.x.x and 3.x before 3.0.5 allows remote attackers to cause a denial of service (crash) via TCP packets with source and destination ports of 137 (NETBIOS).

Affected products

• Cisco VPN Client: version 2.0 only; version 3.0 only

Published 2002-10-04. Last modified 2026-06-16.