title: Windows Print Spooler Remote Code Execution Vulnerability
description: <p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p>
<p>UPDATE July 7, 2021: The security update for Windows Server 2012, Windows Server 2016 and Windows 10, Version 1607 have been released. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability.</p>
<p>In addition to installing the updates, in order to secure your system, you must confirm that the following registry settings are set to 0 (zero) or are not defined (<strong>Note</strong>: These registry keys do not exist by default, and therefore are already at the secure setting.), also that your Group Policy setting are correct (see FAQ):</p>
<ul>
<li>HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Printers\PointAndPrint</li>
<li>NoWarningNoElevationOnInstall = 0 (DWORD) or not defined (default setting)</li>
<li>UpdatePromptSettings = 0 (DWORD) or not defined (default setting)</li>
</ul>
<p><strong>Having NoWarningNoElevationOnInstall set to 1 makes your system vulnerable by design.</strong></p>
<p>UPDATE July 6, 2021: Microsoft has completed the investigation and has released security updates to address this vulnerability. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability. See also <a href="https://support.microsoft.com/topic/31b91c02-05bc-4ada-a7ea-183b129578a7">KB5005010: Restricting installation of new printer drivers after applying the July 6, 2021 updates</a>.</p>
<p>Note that the security updates released on and after July 6, 2021 contain protections for CVE-2021-1675 and the additional remote code execution exploit in the Windows Print Spooler service known as “PrintNightmare”, documented in CVE-2021-34527.</p>
problem types: Remote Code Execution
affected:
{
vendor: Microsoft
product: Windows 10 Version 1809
cpes: [cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2029:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2029:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2029:*:*:*:*:*:arm64:*]
platforms: [32-bit Systems, x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.17763.2029, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2019
cpes: cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2029:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.17763.2029, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2019 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2029:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.17763.2029, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2022
cpes: cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.230:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.20348.230, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 20H2
cpes: [cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1083:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1083:*:*:*:*:*:arm64:*]
platforms: [32-bit Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.19042.1083, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server version 20H2
cpes: cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1083:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.19042.1083, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 11 version 21H2
cpes: [cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.318:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.318:*:*:*:*:*:arm64:*]
platforms: [x64-based Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.22000.318, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 21H2
cpes: [cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.1415:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.1415:*:*:*:*:*:arm64:*, cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.1415:*:*:*:*:*:x64:*]
platforms: [32-bit Systems, ARM64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.19044.1415, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 11 version 22H2
cpes: [cpe:2.3:o:microsoft:windows_11_22H2:10.0.22621.674:*:*:*:*:*:arm64:*, cpe:2.3:o:microsoft:windows_11_22H2:10.0.22621.674:*:*:*:*:*:x64:*]
platforms: [ARM64-based Systems, x64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.22621.674, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 22H2
cpes: [cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2251:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2251:*:*:*:*:*:arm64:*, cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2251:*:*:*:*:*:x86:*]
platforms: [x64-based Systems, ARM64-based Systems, 32-bit Systems]
versions:
version: 10.0.0, lessThan: 10.0.19045.2251, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1507
cpes: [cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.18969:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.18969:*:*:*:*:*:x64:*]
platforms: [32-bit Systems, x64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.10240.18969, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 10 Version 1607
cpes: [cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4470:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4470:*:*:*:*:*:x64:*]
platforms: [32-bit Systems, x64-based Systems]
versions:
version: 10.0.0, lessThan: 10.0.14393.4470, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2016
cpes: cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4470:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.14393.4470, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2016 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4470:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 10.0.0, lessThan: 10.0.14393.4470, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows 8.1
cpes: cpe:2.3:o:microsoft:windows_rt_8.1:6.3.9600.20046:*:*:*:*:*:*:*
platforms: ARM64-based Systems
versions:
version: 6.3.0, lessThan: 6.3.9600.20046, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2008 Service Pack 2
cpes: cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21138:*:*:*:*:*:x64:*
platforms: 32-bit Systems
versions:
version: 6.0.0, lessThan: 6.0.6003.21138, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2008 Service Pack 2 (Server Core installation)
cpes: [cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21138:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21138:*:*:*:*:*:x86:*]
platforms: [32-bit Systems, x64-based Systems]
versions:
version: 6.0.0, lessThan: 6.0.6003.21138, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2008  Service Pack 2
cpes: cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21138:*:*:*:*:*:x86:*
platforms: x64-based Systems
versions:
version: 6.0.0, lessThan: 6.0.6003.21138, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2008 R2 Service Pack 1
cpes: cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25633:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.1.0, lessThan: 6.1.7601.25633, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2008 R2 Service Pack 1 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25633:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.0.0, lessThan: 6.1.7601.25633, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2012
cpes: cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23383:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.2.0, lessThan: 6.2.9200.23383, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2012 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23383:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.2.0, lessThan: 6.2.9200.23383, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2012 R2
cpes: cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20046:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.3.0, lessThan: 6.3.9600.20046, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Windows Server 2012 R2 (Server Core installation)
cpes: cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20046:*:*:*:*:*:x64:*
platforms: x64-based Systems
versions:
version: 6.3.0, lessThan: 6.3.9600.20046, versionType: custom, status: affected
}
metrics:
format: CVSS
scenarios: GENERAL
cvssV3_1: [
version: 3.1
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
]