CVE-2021-33771

Highest-risk unexploited with PoCs

Exploit code exists, no confirmed in-the-wild activity, ranked by EPSS

Actively Exploited

Confirmed exploited in the wild, sorted by most recently updated

CVSS 7.8EPSS 10%

Published 2021-07-14Updated 2026-08-10

Exploited in the wildPatch

Vulnerability details

Windows Kernel Elevation of Privilege Vulnerability

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

CNAmicrosoft

EPSS score history

Sources

2 links

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CISA Known Exploited CVE Organization

Profile

CVSS

7.8

EPSS

10%

Published

2021-07-14

Updated

2026-08-10

CNA

microsoft

Vendors

Microsoft

16 products

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:*

cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*

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:*

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:*

cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1110:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1110:*:*:*:*:*:*:*

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:*

cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1110:*:*:*:*:*:*:*

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:*

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:*

cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:*

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:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:*

Vulnerability dashboard

Highest-risk unexploited with PoCs

Actively Exploited

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