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Vulnerability record · CVE-2016-0128 · published 12 April 2016

CVE-2016-0128: Microsoft windows 10 vulnerability

Microsoft · Windows 10

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."

6.8 CVSS 3.1 Medium EPSS 21% · top 2.5% CWE-254 · CWE-254
6.8CVSS 3.1 base score, v2 5.8
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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."

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://badlock.org/ Third Party Advisory
http://www.securitytracker.com/id/1035534 Third Party AdvisoryVDB Entry
https://bto.bluecoat.com/security-advisory/sa122 Third Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-047 PatchVendor Advisory
https://www.kb.cert.org/vuls/id/813296 Third Party AdvisoryUS Government Resource
https://www.samba.org/samba/security/CVE-2016-2118.html Vendor Advisory
http://badlock.org/ Third Party Advisory
http://www.securitytracker.com/id/1035534 Third Party AdvisoryVDB Entry
https://bto.bluecoat.com/security-advisory/sa122 Third Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-047 PatchVendor Advisory
https://www.kb.cert.org/vuls/id/813296 Third Party AdvisoryUS Government Resource
https://www.samba.org/samba/security/CVE-2016-2118.html Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-0128), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.