Microsoft Internet Explorer NewMessage Protected Mode Sandbox Escape Vulnerability

ID ZDI-16-018
Type zdi
Reporter Ashutosh Mehra (
Modified 2016-11-09T00:00:00


This vulnerability allows 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 IShdocvwBroker::NewMessage API. Calling this API causes the broker process to load a DLL from a potentially unsafe location. An attacker can leverage this vulnerability to execute code under the context of the user at medium integrity.