Information disclosure in Microsoft Internet Explorer
CVE-2016-3321
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."
Vulnerability class: Information Disclosure
EPSS: 0.353 (98.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Microsoft Internet_explorer — versions 10, 11
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (x_refsource_MS, vendor-advisory)
- secure@microsoft.com (vdb-entry, x_refsource_SECTRACK)
- secure@microsoft.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
- secure@microsoft.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- secure@microsoft.com (mailing-list, x_refsource_BUGTRAQ)
- secure@microsoft.com (vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2016-3321?
- CVE-2016-3321 is a low-severity vulnerability in Microsoft Internet Explorer, classified under Information Disclosure. CVSS score: 2.5/10. Published 2016-08-09.
- How severe is CVE-2016-3321?
- Low severity. CVSS v3 base score is 2.5 out of 10.
- Is CVE-2016-3321 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.