- 8.5HighCVSS base score
- 15.1%Exploitation in 30 daysEPSS · top 3.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Microsoft Windows 10.0.17134.648 - HTTP -> SMB NTLM Reflection Leads to Privilege Elevation (Exploit-DB entry) (opens in a new tab)
EDB-ID 47115local, windowspublished 12 Jul 2019Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 7 months later
· 7 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | High8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 15.1% · top 3.2% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Affected products
Microsoft · Windows 10 Version 1703
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1803
- affected 10.0.0 – < publication
Microsoft · Windows Server, version 1803 (Server Core Installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < publication
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < publication
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < publication
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < publication
Microsoft · Windows 10 Version 1709 for 32-bit Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1709
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for 32-bit Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for x64-based Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for ARM64-based Systems
- affected 10.0.0 – < publication
Microsoft · Windows Server, version 1903 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1507
- affected 10.0.10240.0 – < publication
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < publication
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < publication
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < publication
- affected 6.1.0 – < publication
Microsoft · Windows 7 Service Pack 1
- affected 6.1.0 – < publication
- affected 6.3.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.6003.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < publication
Microsoft · Windows Server 2008 R2 Systems Service Pack 1
- affected 6.1.0 – < publication
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.7601.0 – < publication
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.1.7601.0 – < publication
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < publication
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < publication
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < publication
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < publication
References
3
- Microsoft Windows Security Feature Bypass Vulnerability (opens in a new tab)vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019 (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-9605 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-1019)Record last updated .