The WordOCX ActiveX control in WordViewer.ocx 3.2.0.5 allows remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUploadFile, (4) HttpUploadFile, (5) GotoPage, (6) Save, (7) SaveWebFile, (8) HttpDownloadFile, (9) Open, (10) OpenWebFile, (11) SaveAs, or (12) ShowWordStandardDialog property value.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34027
http://www.vupen.com/english/advisories/2007/1634
http://www.securityfocus.com/bid/23784
http://secunia.com/advisories/25100
http://moaxb.blogspot.com/2007/05/moaxb-03-wordviewerocx-32-multiple_03.html