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 handling of arguments passed to the GetReplacedUrlImgCtxCookie function. By manipulating a document's elements an attacker can access data outside the bounds of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.