CVE-2016-3321

Name: CVE-2016-3321
Creator: NVD / NIST
Published: 2016-08-09T21:59:28.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 35.33%

Last modified Jun 17, 2026

CVE-2016-3321 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 35.33% chance of exploitation in the next 30 days.

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."

Metrics

EPSS Probability

35.33%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	10
Microsoft	Internet Explorer	11

References

http://seclists.org/fulldisclosure/2016/Aug/44Mailing List, Third Party Advisory
http://www.securityfocus.com/archive/1/539174/100/0/threaded
http://www.securityfocus.com/bid/92291
http://www.securitytracker.com/id/1036562
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2016/Aug/44Mailing List, Third Party Advisory
http://www.securityfocus.com/archive/1/539174/100/0/threaded
http://www.securityfocus.com/bid/92291
http://www.securitytracker.com/id/1036562
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.htmlThird Party Advisory, VDB Entry

Timeline

Published: Aug 9, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-3321?

How severe is CVE-2016-3321?

Severity scoring for CVE-2016-3321 is pending analysis. The EPSS model estimates a 35.33% probability of exploitation in the next 30 days.

How do I fix CVE-2016-3321?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-3321?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST