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CVE Vulnerability Details :
CVE-2021-33771
PUBLISHED
More InfoOfficial Page
Assigner-microsoft
Assigner Org ID-f38d906d-7342-40ea-92c1-6c4a2c6478c8
View Known Exploited Vulnerability (KEV) details
Published At-14 Jul, 2021 | 17:53
Updated At-21 Oct, 2025 | 23:25
Rejected At-
▼CVE Numbering Authority (CNA)
Windows Kernel Elevation of Privilege Vulnerability

Windows Kernel Elevation of Privilege Vulnerability

Affected Products
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1809
CPEs
  • cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2061:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2061:*:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2061:*:*:*:*:*:arm64:*
Platforms
  • 32-bit Systems
  • x64-based Systems
  • ARM64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.17763.2061 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2019
CPEs
  • cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.17763.2061 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2019 (Server Core installation)
CPEs
  • cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.17763.2061 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1909
CPEs
  • cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1679:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1679:*:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_10_1809:10.0.18363.1679:*:*:*:*:*:x64:*
Platforms
  • 32-bit Systems
  • x64-based Systems
  • ARM64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.18363.1679 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 21H1
CPEs
  • cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1110:*:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1110:*:*:*:*:*:arm64:*
  • cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1110:*:*:*:*:*:x86:*
Platforms
  • x64-based Systems
  • ARM64-based Systems
  • 32-bit Systems
Versions
Affected
  • From 10.0.0 before 10.0.19043.1110 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 2004
CPEs
  • cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1110:*:*:*:*:*:x64:*
Platforms
  • 32-bit Systems
  • ARM64-based Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.19041.1110 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server version 2004
CPEs
  • cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1110:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.19041.1110 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 20H2
CPEs
  • cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1110:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1110:*:*:*:*:*:arm64:*
Platforms
  • 32-bit Systems
  • ARM64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.19042.1110 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server version 20H2
CPEs
  • cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1110:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.19042.1110 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1507
CPEs
  • cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19003:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19003:*:*:*:*:*:x64:*
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.10240.19003 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1607
CPEs
  • cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4530:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4530:*:*:*:*:*:x64:*
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.14393.4530 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2016
CPEs
  • cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.14393.4530 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2016 (Server Core installation)
CPEs
  • cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.0 before 10.0.14393.4530 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 8.1
CPEs
  • cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20069:*:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20069:*:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_rt_8.1:6.3.9600.20069:*:*:*:*:*:*:*
Platforms
  • 32-bit Systems
  • x64-based Systems
  • ARM64-based Systems
Versions
Affected
  • From 6.3.0 before 6.3.9600.20069 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012 R2
CPEs
  • cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.3.0 before 6.3.9600.20069 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012 R2 (Server Core installation)
CPEs
  • cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:*
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.3.0 before 6.3.9600.20069 (custom)
Problem Types
TypeCWE IDDescription
ImpactN/AElevation of Privilege
Type: Impact
CWE ID: N/A
Description: Elevation of Privilege
Metrics
VersionBase scoreBase severityVector
3.17.8HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Version: 3.1
Base score: 7.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
x_refsource_MISC
Hyperlink: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
x_refsource_MISC
x_transferred
Hyperlink: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-noinfoCWE-noinfo Not enough information
Type: CWE
CWE ID: CWE-noinfo
Description: CWE-noinfo Not enough information
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
kev
dateAdded:
2021-11-03
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2021-33771 added to CISA KEV2021-11-03 00:00:00
Event: CVE-2021-33771 added to CISA KEV
Date: 2021-11-03 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771
Resource:
government-resource
Details not found