Internet Explorer on Microsoft Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2 allows an attacker to execute arbitrary code in the context of the current user when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption Vulnerability".
https://www.exploit-db.com/exploits/42336/
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8594