Microsoft Internet Explorer JavaScript WeakMap Type Confusion Remote Code Execution Vulnerability

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 WeakMap objects in JavaScript. By performing actions in JavaScript an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute code under the context of the current process.