The MyAsUtil ActiveX control in MyAsUtil5.2.0.603.dll in McAfee SaaS Endpoint Protection 5.2.1 and earlier allows remote attackers to bypass the MyASUtil.SecureObjectFactory.CreateSecureObject domain execution policy using a cross-site scripting (XSS) attack, execute arbitrary code using the MyASUtil.InstallInfo.RunUserProgram function, and possibly conduct other unspecified attacks.