CVE-2019-1214: Microsoft Windows Privilege Common Log File System (CLFS) Escalation Vulnerability

Vulnerability summary

CVE-2019-1214 is a high (CVSS 7.8) vulnerability in Microsoft Windows. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.4% of scored vulnerabilities.

Timeline

1. 11-09-2019
   PublishedVulnerability first disclosed.
2. 03-11-2021
   Added to CISA KEVMicrosoft Windows Privilege Common Log File System (CLFS) Escalation Vulnerability
3. 03-05-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

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'.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.