{"id":"CVE-2016-3321","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-3321","generatedAt":"2026-11-05T05:24:14.790Z","title":"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…","description":"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.\"","published":"2016-08-09T21:59:29.000Z","lastModified":"2026-06-17T00:45:29.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":2.5,"severity":"LOW","vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-200"],"affected":["microsoft/internet explorer"],"epss":{"score":0.36143,"percentile":0.98481,"date":"2026-11-04","history":[{"date":"2026-09-21","score":0.23054,"percentile":0.97699},{"date":"2026-09-22","score":0.35331,"percentile":0.98375}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 36.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.35331,"from":0.23054,"percentile":0.98375},"summary":"EPSS moved from 23.1% to 35.3% probability of exploitation in the next thirty days."}],"references":[{"url":"http://seclists.org/fulldisclosure/2016/Aug/44","tags":["Mailing List","Third Party Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/archive/1/539174/100/0/threaded","source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/92291","source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id/1036562","source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095","source":"secure@microsoft.com"},{"url":"https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://seclists.org/fulldisclosure/2016/Aug/44","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/539174/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92291","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036562","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-3321","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}