CVE-2006-6131: Kerio Webstar

Medium severity, CVSS 6.2. EPSS: 0.9% chance of exploitation in the next 30 days.

Untrusted search path vulnerability in (1) WSAdminServer and (2) WSWebServer in Kerio WebSTAR (4D WebSTAR Server Suite) 5.4.2 and earlier allows local users with webstar privileges to gain root privileges via a malicious libucache.dylib helper library in the current working directory.

Affected products

• Kerio Webstar: up to and including 5.4.2; version 4.0 only; version 5.1.2 only; version 5.1.3 only; version 5.2 only; version 5.2.1 only; …

Published 2006-11-28. Last modified 2026-06-16.