This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the unloading of pages. By manipulating the load and unload process, an attacker is able to create a use-after-free condition. With this, an attacker is able to execute arbitrary code in the context of the browser.