Microsoft Internet Explorer 8 does not properly allocate and access memory, which allows remote attackers to execute arbitrary code via vectors involving a "dereferenced memory address," aka "Select Element Remote Code Execution Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12697
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081