CVE-2006-0677: Kth Heimdal

High severity, CVSS 7.8. EPSS: 3.1% chance of exploitation in the next 30 days.

telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.

Affected products

• Kth Heimdal: version 0.6.1 only; version 0.6.2 only; version 0.6.3 only; version 0.6.4 only; version 0.6.5 only; version 0.7.1 only; …

Published 2006-02-14. Last modified 2026-06-16.