Threats / Microsoft / CVE-2019-1214
CVE-2019-1214
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
Microsoft Windows Common Log File System (CLFS) driver improperly handles objects in memory, enabling privilege escalation attacks.
Verdict
Today item — known-exploited.
A memory handling flaw in the Windows CLFS driver permits local attackers to escalate privileges. Active exploitation in the wild demonstrates practical threat; however, no ransomware campaigns have leveraged this vulnerability.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.01324 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Windows. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain initial access to a Windows system with limited user privileges.
Business
An attacker establishes a foothold on the endpoint, bypassing perimeter controls.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I craft a malicious input that exploits improper object handling in the CLFS driver.
Business
The vulnerability creates an attack surface within a core Windows subsystem.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute code that triggers the memory handling flaw to escalate my privileges to system level.
Business
The attacker gains administrative control, enabling lateral movement and persistence.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05