CVE-2000-0971: Avirt Mail Server

High severity, CVSS 10.0. EPSS: 5.6% chance of exploitation in the next 30 days.

Avirt Mail 4.0 and 4.2 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long "RCPT TO" or "MAIL FROM" command.

Affected products

• Avirt Avirt Mail Server: version 4.0 only; version 4.2 only

Published 2000-12-19. Last modified 2026-09-23.