Microsoft Internet Explorer 10 and 11 load different files for attempts to open a file:// URL depending on whether the file exists, which allows local users to enumerate files via vectors involving a file:// URL and an HTML5 sandbox iframe, aka "Internet Explorer Information Disclosure Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
http://www.securitytracker.com/id/1036562
http://www.securityfocus.com/bid/92291
http://www.securityfocus.com/archive/1/539174/100/0/threaded