Stack-based buffer overflow in an ActiveX control in KVWebSvr.dll in WellinTech KingView 6.52 and 6.53 allows remote attackers to execute arbitrary code via a long second argument to the ValidateUser method.
www.cnvd.org.cn/vulnerability/CNVD-2011-04541
www.kingview.com/news/detail.aspx?contentid=537
www.osvdb.org/72889
www.scadahacker.com/exploits-wellintech-kvwebsvr.html
www.securityfocus.com/bid/46757
www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-066-01.pdf
www.us-cert.gov/control_systems/pdf/ICSA-11-074-01.pdf
www.exploit-db.com/exploits/16936