CVE-2021-33771: Windows Kernel Elevation of Privilege Vulnerability
First published: Wed Jul 14 2021(Updated: )
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Credit: secure@microsoft.com secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | =20h2 | |
| Microsoft Windows 10 | =21h1 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =1909 | |
| Microsoft Windows 10 | =2004 | |
| Microsoft Windows 8.1 | ||
| Microsoft Windows RT | ||
| Microsoft Windows Server | =sp1 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | =20h2 | |
| Microsoft Windows Server 2016 | =2004 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows 10 | <10.0.10240.19003 | |
| Microsoft Windows 10 | <10.0.14393.4530 | |
| Microsoft Windows 10 | <10.0.17763.2061 | |
| Microsoft Windows 10 | <10.0.18363.1679 | |
| Microsoft Windows 10 | <10.0.19041.1110 | |
| Microsoft Windows 10 | <10.0.19042.1110 | |
| Microsoft Windows 10 | <10.0.19043.1110 | |
| Microsoft Windows Server 2004 | <10.0.19041.1110 | |
| Microsoft Windows Server 2016 | <10.0.14393.4530 | |
| Microsoft Windows Server 2019 | <10.0.17763.2061 | |
| Microsoft Windows Server 20H2 | <10.0.19042.1110 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-33771?
CVE-2021-33771 has a severity rating that may vary based on the affected system, but it is classified as a privilege escalation vulnerability.
How do I fix CVE-2021-33771?
To fix CVE-2021-33771, ensure that you have installed the latest security updates provided by Microsoft for your affected Windows version.
What versions of Windows are affected by CVE-2021-33771?
CVE-2021-33771 affects multiple versions of Windows, including Windows 10, Windows 8.1, and various Windows Server editions.
Can CVE-2021-33771 be exploited remotely?
CVE-2021-33771 requires local access to the system for exploitation, meaning it cannot be exploited remotely.
What are the potential impacts of CVE-2021-33771?
Exploiting CVE-2021-33771 could allow an attacker to gain elevated privileges on an affected system, potentially leading to unauthorized access or control.
- agent/type
- agent/first-publish-date
- agent/remedy
- agent/severity
- agent/weakness
- agent/description
- agent/title
- exploited/true
- collector/cisa-known-exploited
- source/CISA
- agent/software-canonical-lookup
- agent/references
- agent/author
- agent/event
- agent/source
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- source/NVD
- collector/nvd-cve
- vendor/microsoft
- canonical/microsoft windows
- canonical/microsoft windows 10
- version/microsoft windows 10/20h2
- version/microsoft windows 10/21h1
- version/microsoft windows 10/1607
- version/microsoft windows 10/1809
- version/microsoft windows 10/1909
- version/microsoft windows 10/2004
- canonical/microsoft windows 8.1
- canonical/microsoft windows rt
- canonical/microsoft windows server
- version/microsoft windows server/sp1
- version/microsoft windows server/sp2
- version/microsoft windows server/r2
- canonical/microsoft windows server 2016
- version/microsoft windows server 2016/20h2
- version/microsoft windows server 2016/2004
- canonical/microsoft windows server 2019
- canonical/microsoft windows server 2004
- canonical/microsoft windows server 20h2