title: Windows Defender Application Control Security Feature Bypass Vulnerability
description: <p>A security feature bypass vulnerability exists in Windows Defender Application Control (WDAC) which could allow an attacker to bypass WDAC enforcement. An attacker who successfully exploited this vulnerability could execute PowerShell commands that would be blocked by WDAC.</p>
<p>To exploit the vulnerability, an attacker need administrator access on a local machine where PowerShell is running. The attacker could then connect to a PowerShell session and send commands to execute arbitrary code.</p>
<p>The update addresses the vulnerability by correcting how PowerShell commands are validated when WDAC protection is enabled.</p>
problem types: Security Feature Bypass
affected:
{
vendor: Microsoft
product: Windows 10 Version 1803
cpes: [cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:arm64:*]
platforms: [32-bit Systems, x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1809
cpes: [cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*]
platforms: [32-bit Systems, x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2019
cpes: cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2019 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1909
cpes: [cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*]
platforms: [32-bit Systems, x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server, version 1909 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1709 for 32-bit Systems
cpes: cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
platforms: 32-bit Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1709
cpes: cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
platforms: [x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1903 for 32-bit Systems
cpes: cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
platforms: Unknown
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1903 for x64-based Systems
cpes: cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
platforms: Unknown
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1903 for ARM64-based Systems
cpes: cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
platforms: Unknown
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server, version 1903 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 2004
cpes: cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
platforms: [32-bit Systems, ARM64-based Systems, x64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server version 2004
cpes: cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1607
cpes: [cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*]
platforms: [32-bit Systems, x64-based Systems]
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2016
cpes: cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2016 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: PowerShell 7.0
cpes: cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
platforms: Unknown
versions:
version: 7.0.0, lessThan: 7.0.8, versionType: custom, status: affected
}
{
vendor: Microsoft
product: PowerShell 7.1
cpes: cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
platforms: Unknown
versions:
version: 7.1.0, lessThan: 7.1.5, versionType: custom, status: affected
}
metrics:
format: CVSS
scenarios: GENERAL
cvssV3_1: [
version: 3.1
baseSeverity: MEDIUM
baseScore: 6.7
vectorString: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
]