CVE-2000-0390: Cygnus Network Security

High severity, CVSS 10.0. EPSS: 4% chance of exploitation in the next 30 days.

Buffer overflow in krb425_conv_principal function in Kerberos 5 allows remote attackers to gain root privileges.

Affected products

• Cygnus Cygnus Network Security: version 4.0 only
• Cygnus Kerbnet: version 5.0 only
• Mit Kerberos: version 4.0 only
• Mit Kerberos 5: version 1.0 only; version 1.1.1 only
• Red Hat Linux: version 6.2 only

Published 2000-05-16. Last modified 2026-06-16.