CVE-2006-6554: Kerio Mailserver

Medium severity, CVSS 5.0. EPSS: 1.5% chance of exploitation in the next 30 days.

Unspecified vulnerability in Kerio MailServer before 6.3.1 allows remote attackers to cause a denial of service (segmentation fault and service stop) via certain long LDAP queries, as demonstrated by vd_kms6.pm.

Affected products

• Kerio Kerio Mailserver: up to and including 6.3.0; version 5.0 only; version 5.1 only; version 5.1.1 only; version 5.6.3 only; version 5.6.4 only; …

Published 2006-12-14. Last modified 2026-06-16.