CVE-2005-1062: Kerio Mailserver

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

The administration protocol for Kerio WinRoute Firewall 6.x up to 6.0.10, Personal Firewall 4.x up to 4.1.2, and MailServer up to 6.0.8 allows remote attackers to quickly obtain passwords that are 5 characters or less via brute force methods.

Affected products

• Kerio Kerio Mailserver: version 6.0.0 only; version 6.0.1 only; version 6.0.2 only; version 6.0.3 only; version 6.0.4 only; version 6.0.5 only; …
• Kerio Personal Firewall: version 4.0.7 only; version 4.0.8 only; version 4.0.9 only; version 4.0.10 only; version 4.0.11 only; version 4.0.12 only; …
• Kerio Winroute Firewall: version 6.0.0 only; version 6.0.1 only; version 6.0.2 only; version 6.0.3 only; version 6.0.4 only; version 6.0.5 only; …

Published 2005-05-02. Last modified 2026-06-16.