CVE-2021-36955: Windows Common Log File System Driver Elevation of Privilege Vulnerability
First published: Wed Sep 15 2021(Updated: )
Microsoft Windows Common Log File System (CLFS) driver 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 10 | <10.0.10240.19060 | |
| Microsoft Windows 10 | <10.0.14393.4651 | |
| Microsoft Windows 10 | <10.0.17763.2183 | |
| Microsoft Windows 10 | <10.0.18363.1801 | |
| Microsoft Windows 10 | <10.0.19041.1237 | |
| Microsoft Windows 10 | <10.0.19042.1237 | |
| Microsoft Windows 10 | <10.0.19043.1237 | |
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows | ||
| Microsoft Windows RT | ||
| Microsoft Windows Server 2004 | <10.0.19041.1237 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =r2-sp1 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server 2016 | <10.0.14393.4651 | |
| Microsoft Windows Server 2019 | <10.0.17763.2183 | |
| Microsoft Windows Server 2022 | <10.0.20348.230 | |
| Microsoft Windows Server 20H2 | <10.0.19042.1237 | |
| Windows 10 | ||
| Windows 10 | =20h2 | |
| Windows 10 | =21h1 | |
| Windows 10 | =1607 | |
| Windows 10 | =1809 | |
| Windows 10 | =1909 | |
| Windows 10 | =2004 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | =20h2 | |
| Microsoft Windows Server 2016 | =2004 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Operating System |
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-2021-36955?
The severity of CVE-2021-36955 is considered high, indicating a significant risk of privilege escalation.
How do I fix CVE-2021-36955?
To fix CVE-2021-36955, ensure that your Microsoft Windows systems are updated with the latest security patches provided by Microsoft.
What systems are affected by CVE-2021-36955?
CVE-2021-36955 affects various versions of Microsoft Windows, including Windows 7, Windows 8.1, and multiple editions of Windows 10 and Windows Server.
Is there a workaround for CVE-2021-36955?
There are no known workarounds for CVE-2021-36955; applying the security update is the recommended solution.
Can CVE-2021-36955 be exploited remotely?
CVE-2021-36955 does not require remote access to exploit, but an authenticated user may escalate their privileges if vulnerable.
- agent/type
- agent/first-publish-date
- agent/remedy
- agent/severity
- agent/description
- agent/title
- agent/references
- agent/author
- agent/source
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-cve
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- exploited/true
- ransomware/true
- collector/cisa-known-exploited
- source/CISA
- vendor/microsoft
- canonical/microsoft windows 10
- canonical/microsoft windows 7
- version/microsoft windows 7/sp1
- canonical/microsoft windows
- canonical/microsoft windows rt
- canonical/microsoft windows server 2004
- canonical/microsoft windows server
- version/microsoft windows server/sp2
- version/microsoft windows server/r2-sp1
- version/microsoft windows server/r2
- canonical/microsoft windows server 2016
- canonical/microsoft windows server 2019
- canonical/microsoft windows server 2022
- canonical/microsoft windows server 20h2
- canonical/windows 10
- version/windows 10/20h2
- version/windows 10/21h1
- version/windows 10/1607
- version/windows 10/1809
- version/windows 10/1909
- version/windows 10/2004
- version/microsoft windows server 2016/20h2
- version/microsoft windows server 2016/2004
- canonical/microsoft windows operating system