CVE-2016-3320

Name: CVE-2016-3320
Creator: NVD / NIST
Published: 2016-08-09T21:59:27.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.01%

Last modified Jun 17, 2026

CVE-2016-3320 is a vulnerability of currently unknown severity. Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow attackers to bypass the Secure Boot protection mechanism by leveraging (1) administrative or (2) physical access to install a crafted boot manager, aka "Secure Boot Security Feature Bypass.". EPSS estimates a 5.01% chance of exploitation in the next 30 days.

Description

Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow attackers to bypass the Secure Boot protection mechanism by leveraging (1) administrative or (2) physical access to install a crafted boot manager, aka "Secure Boot Security Feature Bypass."

Metrics

EPSS Probability

5.01%

91.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	All versions
Microsoft	Windows 10	1511
Microsoft	Windows 8.1	All versions
Microsoft	Windows Rt 8.1	All versions
Microsoft	Windows Server 2012	All versions
Microsoft	Windows Server 2012	r2
Fedoraproject	Fedora	25

References

http://www.securityfocus.com/bid/92304Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036573Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-100Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MVB6Y2TVKSOBTIIBRUAJUIH3LQHMHCAG/
http://www.securityfocus.com/bid/92304Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036573Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-100Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MVB6Y2TVKSOBTIIBRUAJUIH3LQHMHCAG/

Timeline

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

Frequently Asked Questions

What is CVE-2016-3320?

How severe is CVE-2016-3320?

Severity scoring for CVE-2016-3320 is pending analysis. The EPSS model estimates a 5.01% probability of exploitation in the next 30 days.

How do I fix CVE-2016-3320?

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-2016-3320?

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

Scan your code now

Source: NVD / NIST