Description
Windows Kernel Elevation of Privilege Vulnerability
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1507 | >= 10.0.10240.0, < 10.0.10240.19003 |
| Microsoft | Windows 10 Version 1607 | >= 10.0.14393.0, < 10.0.14393.4530 |
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < 10.0.17763.2061 |
| Microsoft | Windows 10 Version 1809 | >= 10.0.0, < 10.0.17763.2061 |
| Microsoft | Windows 10 Version 1909 | >= 10.0.0, < 10.0.18363.1679 |
| Microsoft | Windows 10 Version 2004 | >= 10.0.0, < 10.0.19041.1110 |
| Microsoft | Windows 10 Version 20H2 | >= 10.0.0, < 10.0.19042.1110 |
| Microsoft | Windows 10 Version 21H1 | >= 10.0.0, < 10.0.19043.1110 |
| Microsoft | Windows 8.1 | >= 6.3.0, < 6.3.9600.20069 |
| Microsoft | Windows Server 2012 R2 | >= 6.3.9600.0, < 6.3.9600.20069 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | >= 6.3.9600.0, < 6.3.9600.20069 |
| Microsoft | Windows Server 2016 | >= 10.0.14393.0, < 10.0.14393.4530 |
| Microsoft | Windows Server 2016 (Server Core installation) | >= 10.0.14393.0, < 10.0.14393.4530 |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < 10.0.17763.2061 |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < 10.0.17763.2061 |
| Microsoft | Windows Server version 2004 | >= 10.0.0, < 10.0.19041.1110 |
| Microsoft | Windows Server version 20H2 | >= 10.0.0, < 10.0.19042.1110 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33771Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33771US Government Resource
Timeline
- Published
- Jul 14, 2021
- Last modified
- Aug 10, 2026
- Added to CISA KEV
- Nov 3, 2021
- NVD status
- Analyzed