Buffer overflow in the DownloadCertificateExt function in SignKorea SKCommAX ActiveX control module 7.2.0.2 and 3280 6.6.0.1 allows remote attackers to execute arbitrary code via a long pszUserID argument.
https://exchange.xforce.ibmcloud.com/vulnerabilities/33245
http://www.vupen.com/english/advisories/2007/1114
http://www.securityfocus.com/bid/23149