CVEs / CVE-2016-3321
CVE-2016-3321: n/a n/a vulnerability
- low 2.5 CVSS 3.0 (NVD)
- EPSS 37.9% chance of exploitation in the next 30 days, higher than 98% of CVEs (6 Nov 2026)
- Last changed at its sources
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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."
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 6 Nov 2026.
Severity
| CVSS 3.0 | 2.5 lowCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:NScored by NVD |
|---|---|
| Weakness | CWE-200 |
References
- CVE-2016-3321 on NVD
- http://seclists.org/fulldisclosure/2016/Aug/44 Mailing 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.html Third Party Advisory, VDB Entry
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.