Multiple Vivotek IP Cameras remote authentication bypass that could allow access to the video stream
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-4829
http://www.securityfocus.com/bid/63541
http://www.exploit-db.com/exploits/29516
http://www.coresecurity.com/advisories/vivotek-ip-cameras-rtsp-authentication-bypass