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.”
seclists.org/fulldisclosure/2016/Aug/44
www.securityfocus.com/archive/1/539174/100/0/threaded
www.securityfocus.com/bid/92291
www.securitytracker.com/id/1036562
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html