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NVD Vulnerability Details :
CVE-2021-33771
Analyzed
More Info
Official Page
Source
-
secure@microsoft.com
View Known Exploited Vulnerability (KEV) details
Published At
-
14 Jul, 2021 | 18:15
Updated At
-
29 Oct, 2025 | 16:47
Windows Kernel Elevation of Privilege Vulnerability
CISA Catalog
Date Added
Due Date
Vulnerability Name
Required Action
2021-11-03
2021-11-17
Microsoft Windows Kernel Privilege Escalation Vulnerability
Apply updates per vendor instructions.
Date Added:
2021-11-03
Due Date:
2021-11-17
Vulnerability Name:
Microsoft Windows Kernel Privilege Escalation Vulnerability
Required Action:
Apply updates per vendor instructions.
Metrics
Type
Version
Base score
Base severity
Vector
Secondary
3.1
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary
3.1
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary
2.0
7.2
HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
Type:
Secondary
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
Type:
Secondary
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
Type:
Primary
Version:
2.0
Base score:
7.2
Base severity:
HIGH
Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CPE Matches
Microsoft Corporation
microsoft
>>
windows_10_1507
>>
Versions before 10.0.10240.19003(exclusive)
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_1607
>>
Versions before 10.0.14393.4530(exclusive)
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_1809
>>
Versions before 10.0.17763.2061(exclusive)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_1909
>>
Versions before 10.0.18363.1679(exclusive)
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_2004
>>
Versions before 10.0.19041.1110(exclusive)
cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_20h2
>>
Versions before 10.0.19042.1110(exclusive)
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_10_21h1
>>
Versions before 10.0.19043.1110(exclusive)
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_8.1
>>
-
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_rt_8.1
>>
-
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_2004
>>
Versions before 10.0.19041.1110(exclusive)
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_2008
>>
-
cpe:2.3:o:microsoft:windows_server_2008:-:sp1:*:*:*:*:x64:*
Microsoft Corporation
microsoft
>>
windows_server_2008
>>
-
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_2012
>>
-
cpe:2.3:o:microsoft:windows_server_2012:-:r2:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_2016
>>
Versions before 10.0.14393.4530(exclusive)
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_2019
>>
Versions before 10.0.17763.2061(exclusive)
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
Microsoft Corporation
microsoft
>>
windows_server_20h2
>>
Versions before 10.0.19042.1110(exclusive)
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
Load More
Weaknesses
CWE ID
Type
Source
NVD-CWE-noinfo
Primary
nvd@nist.gov
CWE ID:
NVD-CWE-noinfo
Type:
Primary
Source:
nvd@nist.gov
Evaluator Description
Evaluator Impact
Evaluator Solution
Vendor Statements
References
Hyperlink
Source
Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
secure@microsoft.com
Patch
Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
af854a3a-2127-422b-91ae-364da2661108
Patch
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771
134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource
Hyperlink:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
Source:
secure@microsoft.com
Resource:
Patch
Vendor Advisory
Hyperlink:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
Source:
af854a3a-2127-422b-91ae-364da2661108
Resource:
Patch
Vendor Advisory
Hyperlink:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771
Source:
134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
US Government Resource
Change History
0
Changes found
Details not found