CVE-2000-0543: Pgp Certificate Server

Medium severity, CVSS 5.0. EPSS: 1.1% chance of exploitation in the next 30 days.

The command port for PGP Certificate Server 2.5.0 and 2.5.1 allows remote attackers to cause a denial of service if their hostname does not have a reverse DNS entry and they connect to port 4000.

Affected products

• Pgp Certificate Server: version 2.5 only; version 2.5.1 only

Published 2000-06-14. Last modified 2026-06-16.