Use-after-free vulnerability in Microsoft Internet Explorer 5.01 SP4, 6, and 6 SP1 allows remote attackers to execute arbitrary code by changing unspecified properties of an HTML object that has an onreadystatechange event handler, aka "HTML Object Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8421
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018
http://www.vupen.com/english/advisories/2010/0744
http://www.us-cert.gov/cas/techalerts/TA10-089A.html
http://www.us-cert.gov/cas/techalerts/TA10-068A.html
http://www.securityfocus.com/bid/39027
http://securitytracker.com/id?1023773
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=864