CVE-2003-0280: Youngzsoft Cmailserver

High severity, CVSS 10.0. EPSS: 14.7% chance of exploitation in the next 30 days.

Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow remote attackers to execute arbitrary code via long (1) MAIL FROM or (2) RCPT TO commands.

Affected products

• Youngzsoft Cmailserver: version 4.0.2003.23.27 only

Published 2003-06-16. Last modified 2026-06-16.