CVE-2012-4787 in Internet Explorer
Summary
Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka "Improper Ref Counting Use After Free Vulnerability."
If you want to get best quality of vulnerability data, you may have to visit VulDB.