CVE-2004-1022: Kerio Mailserver

Low severity, CVSS 2.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Kerio Winroute Firewall before 6.0.7, ServerFirewall before 1.0.1, and MailServer before 6.0.5 use symmetric encryption for user passwords, which allows attackers to decrypt the user database and obtain the passwords by extracting the secret key from within the software.

Affected products

• Kerio Kerio Mailserver: version 5.0 only; version 5.1 only; version 5.1.1 only; version 5.6.3 only; version 5.6.4 only; version 5.6.5 only; …
• Kerio Serverfirewall: version 1.0 only
• Kerio Winroute Firewall: version 5.0.1 only; version 5.0.2 only; version 5.0.3 only; version 5.0.4 only; version 5.0.5 only; version 5.0.6 only; …

Published 2005-01-10. Last modified 2026-06-16.