Stack-based buffer overflow in the pdg2.dll ActiveX control in SSReader 4.0 and earlier allow remote attackers to execute arbitrary code via a long argument to the Register method. NOTE: some details were obtained from third party sources.
https://exchange.xforce.ibmcloud.com/vulnerabilities/38311
http://www.vupen.com/english/advisories/2007/3769
http://www.dswlab.com/vir/v20071020.html