Multiple stack-based buffer overflows in the BackupToAvi method in the (1) UMS_Ctrl 1.5.1.1 and (2) UMS_Ctrl_STW 2.0.1.0 ActiveX controls in Samsung NET-i viewer 1.37.120316 allow remote attackers to execute arbitrary code via a long string in the fname parameter.  NOTE: some of these details are obtained from third party information.