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 way Internet Explorer handles repeated calls to insertAdjacentText. When the size of the element reaches a certain threshold Internet Explorer fails to correctly relocate key elements. An unitialized variable in one of the function can cause memory corruption. This can lead to remote code execution under the context of the program.