Microsoft Internet Explorer 10 and 11 mishandles integrity settings and zone settings, which allows remote attackers to bypass a sandbox protection mechanism via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability."
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-4325
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-104