Unknown vulnerability in Kerio Personal Firewall 4.1.2 and earlier allows local users to bypass firewall rules via a malicious process that impersonates a legitimate process that has fewer restrictions.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19893
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0965
http://www.securityfocus.com/bid/12946
http://www.kerio.com/security_advisory.html#0503