Webroot Desktop Firewall before 1.3.0build52 allows local users to disable the firewall, even when password protection is enabled, via certain DeviceIoControl commands.
https://exchange.xforce.ibmcloud.com/vulnerabilities/22530
http://www.vupen.com/english/advisories/2005/1973
http://www.securityfocus.com/bid/15016
http://support.webroot.com/ics/support/KBAnswer.asp?questionID=2332
http://securitytracker.com/id?1015012
http://securityreason.com/securityalert/55
http://secunia.com/secunia_research/2005-10/advisory/
http://secunia.com/advisories/15745/
http://archives.neohapsis.com/archives/fulldisclosure/2005-10/0129.html