CVE-2004-1907
The Web Filtering functionality in Kerio Personal Firewall (KPF) 4.0.13 allows remote attackers to cause a denial of service (crash) by sending hex-encoded URLs containing "%13%12%13".
Date published : 2005-05-10
http://www.securityfocus.com/bid/10075
http://archives.neohapsis.com/archives/bugtraq/2004-04/0061.html