Microsoft Internet Explorer selectAll/RemoveFormat execCommand Use-After-Free Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of 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 selectAll/RemoveFormat command. The execution of these commands can lead to a use-after-free condition. An attacker can leverage this situation to execute code under the context of the user running the browser.