CVE-2007-3993: Kerio Mailserver

High severity, CVSS 10.0. EPSS: 1.8% chance of exploitation in the next 30 days.

Unspecified vulnerability in the attachment filter in Kerio MailServer before 6.4.1 has unknown impact and remote attack vectors.

Affected products

• Kerio Kerio Mailserver: up to and including 6.4.0

Published 2007-07-25. Last modified 2026-06-16.