CVE-2020-0634
HIGHCVSS 7.8/10EPSS 1.23%
Last modified
CVE-2020-0634 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory, aka 'Windows Common Log File System Driver Elevation of Privilege Vulnerability'.. EPSS estimates a 1.23% chance of exploitation in the next 30 days.
Description
An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory, aka '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 | 1607 | — |
| Microsoft | Windows 10 | 1709 | — |
| Microsoft | Windows 10 | 1803 | — |
| Microsoft | Windows 10 | 1809 | — |
| Microsoft | Windows 10 | 1903 | — |
| Microsoft | Windows 10 | 1909 | — |
| 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 2012 | r2 | — |
| Microsoft | Windows Server 2016 | All versions | — |
| Microsoft | Windows Server 2016 | 1803 | — |
| Microsoft | Windows Server 2016 | 1903 | — |
| Microsoft | Windows Server 2016 | 1909 | — |
| Microsoft | Windows Server 2019 | All versions | — |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0634Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-125/Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0634Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-125/Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-0634?
An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory, aka 'Windows Common Log File System Driver Elevation of Privilege Vulnerability'.
How severe is CVE-2020-0634?
CVE-2020-0634 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.
How do I fix CVE-2020-0634?
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 2020
- CVE-2020-0628An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0629An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0630An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0631An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0632An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0633An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0635An elevation of privilege vulnerability exists in Microsoft …7.8
- CVE-2020-0636An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0637An information disclosure vulnerability exists when Remote D…6.5
- CVE-2020-0638An elevation of privilege vulnerability exists in the way th…7.8
- CVE-2020-0639An information disclosure vulnerability exists in the Window…5.5
- CVE-2020-0640A remote code execution vulnerability exists when Internet E…7.5
Are you affected by CVE-2020-0634?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST