Dec 2021: Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-43226 Published on December 15, 2021
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Known Exploited Vulnerability
This Microsoft Windows Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Microsoft Windows Common Log File System Driver contains a privilege escalation vulnerability that could allow a local, privileged attacker to bypass certain security mechanisms.
The following remediation steps are recommended / required by October 27, 2025: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Products Associated with CVE-2021-43226
Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.
Affected Versions
Microsoft Windows 10 Version 1809:- Version 10.0.0 and below 10.0.17763.2366 is affected.
- Version 10.0.0 and below 10.0.17763.2366 is affected.
- Version 10.0.0 and below 10.0.17763.2366 is affected.
- Version 10.0.0 and below 10.0.18363.1977 is affected.
- Version 10.0.0 and below 10.0.19043.1415 is affected.
- Version 10.0.0 and below 10.0.20348.405 is affected.
- Version 10.0.0 and below 10.0.19041.1415 is affected.
- Version 10.0.0 and below 10.0.19041.1415 is affected.
- Version 10.0.0 and below 10.0.19042.1415 is affected.
- Version 10.0.0 and below 10.0.19042.1415 is affected.
- Version 10.0.0 and below 10.0.22000.376 is affected.
- Version 10.0.0 and below 10.0.19044.1415 is affected.
- Version 10.0.0 and below 10.0.10240.19145 is affected.
- Version 10.0.0 and below 10.0.14393.4825 is affected.
- Version 10.0.0 and below 10.0.14393.4825 is affected.
- Version 10.0.0 and below 10.0.14393.4825 is affected.
- Version 6.1.0 and below 6.1.7601.25796 is affected.
- Version 6.1.0 and below 6.1.7601.25796 is affected.
- Version 6.3.0 and below 6.3.9600.20207 is affected.
- Version 6.0.0 and below 6.0.6003.21309 is affected.
- Version 6.0.0 and below 6.0.6003.21309 is affected.
- Version 6.0.0 and below 6.0.6003.21309 is affected.
- Version 6.1.0 and below 6.1.7601.25796 is affected.
- Version 6.0.0 and below 6.1.7601.25796 is affected.
- Version 6.2.0 and below 6.2.9200.23545 is affected.
- Version 6.2.0 and below 6.2.9200.23540 is affected.
- Version 6.2.0 and below 6.2.9200.23545 is affected.
- Version 6.2.0 and below 6.2.9200.23540 is affected.
- Version 6.3.0 and below 6.3.9600.20207 is affected.
- Version 6.3.0 and below 6.3.9600.20207 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.