This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Moxa SoftCMS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within processing of the strUserName parameter of the setUserInfoData method of the VLCPlugin control. The user name string is copied to a fixed-length heap buffer without a length validation. An attacker can leverage this vulnerability to gain code execution under the context of the process.