A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user, a.k.a. "Internet Explorer Memory Corruption Vulnerability."
https://www.exploit-db.com/exploits/41941/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0202