Use-after-free vulnerability in the CAttrArray::PrivateFind function in mshtml.dll in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code by setting an unspecified property of a stylesheet object, aka "Uninitialized Memory Corruption Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-071
http://www.zerodayinitiative.com/advisories/ZDI-10-197/