High severity7.8NVD Advisory· Published Jan 14, 2020· Updated Jun 17, 2026
CVE-2020-0634
CVE-2020-0634
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'.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
11- Microsoft/Windows 10 Version 1903 for 32-bit Systemsv5Range: unspecified
- Microsoft/Windows 10 Version 1903 for ARM64-based Systemsv5Range: unspecified
- Microsoft/Windows 10 Version 1903 for x64-based Systemsv5Range: unspecified
- Microsoft/Windows 10 Version 1909 for 32-bit Systemsv5Range: unspecified
- Microsoft/Windows 10 Version 1909 for ARM64-based Systemsv5Range: unspecified
- Microsoft/Windows 10 Version 1909 for x64-based Systemsv5Range: unspecified
- Range: version 1803 (Core Installation)
- Microsoft/Windows Server, version 1903 (Server Core installation)v5Range: unspecified
- Microsoft/Windows Server, version 1909 (Server Core installation)v5Range: unspecified
Patches
Vulnerability mechanics
References
2- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0634nvdPatchVendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-125/nvdThird Party AdvisoryVDB Entry
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