VULNERABILITY INTELLIGENCE

CVE-2020-0634

CVSS score7.8 HIGH

EPSS probability1.23%

CISA KEVNot currently listed

Published2020-01-14

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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'.

Weakness classification

CWE-416: Use After Free

Primary references

secure@microsoft.com — Patch, Vendor Advisory
secure@microsoft.com — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry