NetSupport Manager Client before 10.20.0004 allows remote attackers to bypass the (1) basic and (2) authentication schemes by spoofing the NetSupport Manager.
https://exchange.xforce.ibmcloud.com/vulnerabilities/36726
http://www.securitytracker.com/id?1018732
http://www.securityfocus.com/bid/25761
http://www.securityfocus.com/archive/1/480240/100/0/threaded
http://www.netsupportsoftware.com/support/td.asp?td=543&Site=nsltd&Lang=