CVE-2021-38633
HIGHCVSS 7.8/10EPSS 0.89%
Last modified
CVE-2021-38633 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Windows Common Log File System Driver Elevation of Privilege Vulnerability. EPSS estimates a 0.89% chance of exploitation in the next 30 days.
Description
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Windows 10 | All versions | — |
| 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 7 | All versions | Sp1 |
| Microsoft | Windows 8.1 | All versions | — |
| Microsoft | Windows Rt 8.1 | All versions | — |
| Microsoft | Windows Server 2008 | All versions | Sp2 |
| Microsoft | Windows Server 2008 | r2 | Sp1 |
| Microsoft | Windows Server 2012 | All versions | — |
| Microsoft | Windows Server 2016 | All versions | — |
| Microsoft | Windows Server 2016 | 20h2 | — |
| Microsoft | Windows Server 2016 | 2004 | — |
| Microsoft | Windows Server 2019 | All versions | — |
| Microsoft | Windows Server 2022 | All versions | — |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38633?
Windows Common Log File System Driver Elevation of Privilege Vulnerability
How severe is CVE-2021-38633?
CVE-2021-38633 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38633?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-38628Windows Ancillary Function Driver for WinSock Elevation of P…7.8
- CVE-2021-38629Windows Ancillary Function Driver for WinSock Information Di…6.5
- CVE-2021-3863snipe-it is vulnerable to Improper Neutralization of Input D…6.1
- CVE-2021-38630Windows Event Tracing Elevation of Privilege Vulnerability7.8
- CVE-2021-38631Windows Remote Desktop Protocol (RDP) Information Disclosure…4.4
- CVE-2021-38632Windows BitLocker Security Feature Bypass Vulnerability5.7
- CVE-2021-38634Microsoft Windows Update Client Elevation of Privilege Vulne…7.1
- CVE-2021-38635Windows Redirected Drive Buffering SubSystem Driver Informat…5.5
- CVE-2021-38636Windows Redirected Drive Buffering SubSystem Driver Informat…5.5
- CVE-2021-38637Windows Storage Information Disclosure Vulnerability5.5
- CVE-2021-38638Windows Ancillary Function Driver for WinSock Elevation of P…7.8
- CVE-2021-38639Win32k Elevation of Privilege Vulnerability7.8
Are you affected by CVE-2021-38633?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST