Microsoft Internet Explorer 5.01 through 7 allows remote attackers to execute arbitrary code via "unexpected method calls to HTML objects," aka "DHTML Object Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4332
https://exchange.xforce.ibmcloud.com/vulnerabilities/38716
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-069
http://www.vupen.com/english/advisories/2007/4184
http://www.us-cert.gov/cas/techalerts/TA07-345A.html
http://www.securityfocus.com/bid/26427
http://www.securityfocus.com/archive/1/485268/100/0/threaded