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Medium severity5.3NVD Advisory· Published Jun 12, 2019· Updated Jun 17, 2026

CVE-2019-1040

CVE-2019-1040

Description

A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features. To exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature. The update addresses the vulnerability by hardening NTLM MIC protection on the server-side.

Affected products

49
  • Microsoft/Windows 10 1909cpe-rescue8 versions
    10.0.10240.0+ 7 more
    • (no CPE)range: 10.0.10240.0
    • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
  • Microsoft/Windows 10 1809cpe-rescue
    Range: 10.0.0
  • Microsoft/Windows Server 2019cpe-rescue2 versions
    10.0.17763.0+ 1 more
    • (no CPE)range: 10.0.17763.0
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • Microsoft/Windows 10 1607cpe-rescue
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2016cpe-rescue4 versions
    10.0.14393.0+ 3 more
    • (no CPE)range: 10.0.14393.0
    • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
  • Microsoft/Windows 7cpe-rescue2 versions
    6.1.0+ 1 more
    • (no CPE)range: 6.1.0
    • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • Microsoft/Windows 8.1cpe-rescue2 versions
    6.3.0+ 1 more
    • (no CPE)range: 6.3.0
    • cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2008cpe-rescue6 versions
    6.0.0+ 5 more
    • (no CPE)range: 6.0.0
    • (no CPE)range: 6.0.6003.0
    • (no CPE)range: 6.1.7601.0
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
    • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • Microsoft/Windows Server 2012cpe-rescue4 versions
    6.2.9200.0+ 3 more
    • (no CPE)range: 6.2.9200.0
    • (no CPE)range: 6.3.9600.0
    • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • Microsoft/Windows Rt 8.1
    cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • Microsoft/Windowsllm-fuzzy
  • Microsoft/Windows 10 version 1607cpe-rescue
    Range: 10.0.0
  • Microsoft/Windows Server, version 1803 (Server Core Installation)v5
    Range: 10.0.0
  • Microsoft/Windows Server 2019 (Server Core installation)v5
    Range: 10.0.17763.0
  • Microsoft/Windows 10 Version 1709 for 32-bit Systemsv5
    Range: 10.0.0
  • Microsoft/Windows 10 Version 1903 for 32-bit Systemsv5
    Range: 10.0.0
  • Microsoft/Windows 10 Version 1903 for x64-based Systemsv5
    Range: 10.0.0
  • Microsoft/Windows 10 Version 1903 for ARM64-based Systemsv5
    Range: 10.0.0
  • Microsoft/Windows Server, version 1903 (Server Core installation)v5
    Range: 10.0.0
  • Microsoft/Windows Server 2016 (Server Core installation)v5
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2008 Service Pack 2 (Server Core installation)v5
    Range: 6.0.6003.0
  • Microsoft/Windows Server 2008 R2 Systems Service Pack 1v5
    Range: 6.1.0
  • Microsoft/Windows Server 2008 R2 Service Pack 1 (Server Core installation)v5
    Range: 6.1.7601.0
  • Microsoft/Windows Server 2012 (Server Core installation)v5
    Range: 6.2.9200.0
  • Microsoft/Windows Server 2012 R2 (Server Core installation)v5
    Range: 6.3.9600.0
  • Microsoft/Windows Server version 1709cpe-rescue
    Range: 10.0.0
  • Microsoft/Windows CSC Servicecpe-rescue
    Range: 6.1.0
  • Microsoft/Windows 10 1511cpe-rescue
    Range: 10.0.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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