Microsoft Internet Explorer 6, 6 SP1, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka “Uninitialized Memory Corruption Vulnerability.”
securitytracker.com/id?1023773
www.securityfocus.com/bid/39031
www.us-cert.gov/cas/techalerts/TA10-068A.html
www.us-cert.gov/cas/techalerts/TA10-089A.html
www.vupen.com/english/advisories/2010/0744
docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8302