CVE-2021-34516
Detail
Modified After Enrichment
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Current Description
Win32k Elevation of Privilege Vulnerability
View Analysis Description
Analysis
Description
Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-34449.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
CNA: Microsoft Corporation
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
References to Advisories, Solutions, and Tools
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URL
Source(s)
Tag(s)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34516
CVE, Microsoft Corporation
Patch
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1004/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1005/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1006/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1007/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1008/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1009/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1010/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1011/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1012/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1013/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1014/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1015/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1016/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1017/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1018/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1019/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1020/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1021/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1022/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-895/
CVE, Microsoft Corporation
Third Party Advisory
VDB Entry
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-20
Improper Input Validation
NIST  
Change History
9 change records found show changes
CVE Modified by Microsoft Corporation
6/16/2026 11:56:02 PM
Action
Type
Old Value
New Value
Added
Affected
Record truncated, showing 2048 of 8262 characters.
View Entire Change Record
[{"vendor":"Microsoft","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":[{"version":"10.0.0","lessThan":"10.0.17763.2061","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019","cpes":["cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*"],"platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"10.0.17763.2061","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","cpes":["cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*"],"platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"10.0.17763.2061","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","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":[{"version":"10.0.0","lessThan":"10.0.18363.1679","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","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":[{"version":"10.0.0","lessThan":"10.0.19043.1110","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 2004","cpes":["cpe:2.3:o:microsoft:window
CVE Modified by CVE
11/21/2024 1:10:35 AM
Action
Type
Old Value
New Value
Added
Reference
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34516
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1004/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1005/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1006/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1007/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1008/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1009/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1010/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1011/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1012/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1013/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1014/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1015/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1016/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1017/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1018/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1019/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1020/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1021/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1022/
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-895/
CVE Modified by Microsoft Corporation
5/14/2024 5:13:42 AM
Action
Type
Old Value
New Value
CVE Modified by Microsoft Corporation
12/28/2023 6:15:39 PM
Action
Type
Old Value
New Value
Changed
Description
Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-34449.
Win32k Elevation of Privilege Vulnerability
Added
CVSS V3.1
Microsoft Corporation AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE Remap by NIST
7/12/2022 1:42:04 PM
Action
Type
Old Value
New Value
Changed
CWE
CWE-269
CWE-20
Modified Analysis by NIST
9/23/2021 8:20:47 AM
Action
Type
Old Value
New Value
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1004/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1004/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1005/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1005/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1006/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1006/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1007/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1007/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1008/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1008/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1009/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1009/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1010/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1010/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1011/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1011/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1012/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1012/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1013/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1013/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1014/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1014/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1015/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1015/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1016/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1016/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1017/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1017/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1018/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1018/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1019/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1019/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1020/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1020/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1021/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1021/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-1022/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-1022/ Third Party Advisory, VDB Entry
Changed
Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-895/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-895/ Third Party Advisory, VDB Entry
CVE Modified by Microsoft Corporation
8/26/2021 8:15:10 AM
Action
Type
Old Value
New Value
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1004/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1005/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1006/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1007/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1008/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1009/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1010/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1011/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1012/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1013/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1014/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1015/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1016/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1017/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1018/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1019/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1020/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1021/ [No Types Assigned]
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-1022/ [No Types Assigned]
CVE Modified by Microsoft Corporation
7/30/2021 10:15:17 AM
Action
Type
Old Value
New Value
Added
Reference
https://www.zerodayinitiative.com/advisories/ZDI-21-895/ [No Types Assigned]
Initial Analysis by NIST
7/20/2021 10:56:11 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Added
CWE
NIST CWE-269
Added
CPE Configuration
OR
*cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
*cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
*cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
Changed
Reference Type
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34516 No Types Assigned
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34516 Patch, Vendor Advisory
Quick Info
CVE Dictionary Entry: CVE-2021-34516 NVD
Published Date: 07/14/2021 NVD
Last Modified: 06/16/2026
Source: Microsoft Corporation