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:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
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
- NVD status
- Modified