CVE-2016-0128

Name: CVE-2016-0128
Creator: NVD / NIST
Published: 2016-04-12T23:59:06.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 20.88%

Last modified Jun 17, 2026

CVE-2016-0128 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. The SAM and LSAD protocol implementations in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 do not properly establish an RPC channel, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "Windows SAM and LSAD Downgrade Vulnerability" or "BADLOCK.". EPSS estimates a 20.88% chance of exploitation in the next 30 days.

Description

The SAM and LSAD protocol implementations in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 do not properly establish an RPC channel, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "Windows SAM and LSAD Downgrade Vulnerability" or "BADLOCK."

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS Probability

20.88%

97.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 10	All versions	—
Microsoft	Windows 10	1511	—
Microsoft	Windows 7	All versions	Sp1
Microsoft	Windows 8.1	All versions	—
Microsoft	Windows Rt 8.1	All versions	—
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Vista	All versions	Sp2

References

http://badlock.org/Third Party Advisory
http://www.securitytracker.com/id/1035534Third Party Advisory, VDB Entry
https://bto.bluecoat.com/security-advisory/sa122Third Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-047Patch, Vendor Advisory
https://www.kb.cert.org/vuls/id/813296Third Party Advisory, US Government Resource
https://www.samba.org/samba/security/CVE-2016-2118.htmlVendor Advisory
http://badlock.org/Third Party Advisory
http://www.securitytracker.com/id/1035534Third Party Advisory, VDB Entry
https://bto.bluecoat.com/security-advisory/sa122Third Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-047Patch, Vendor Advisory
https://www.kb.cert.org/vuls/id/813296Third Party Advisory, US Government Resource
https://www.samba.org/samba/security/CVE-2016-2118.htmlVendor Advisory

Timeline

Published: Apr 12, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-0128?

How severe is CVE-2016-0128?

CVE-2016-0128 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 20.88% probability of exploitation in the next 30 days.

How do I fix CVE-2016-0128?

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-2016-0128?

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

Scan your code now

Source: NVD / NIST