Buffer overflow in the EasyMailSMTPObj ActiveX control in emsmtp.dll 6.0.1 in the Quiksoft EasyMail SMTP Object, as used in Postcast Server Pro 3.0.61 and other products, allows remote attackers to execute arbitrary code via a long argument to the SubmitToExpress method, a different vulnerability than CVE-2007-1029. NOTE: this may have been fixed in version 6.0.3.15.