FortiClient and EMS
CVE-2026-84386: Unverified ownership in FortiClientWindows
A unverified ownership vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.7, FortiClientWindows 7.2 all versions may allow attacker to improper access control via via an exposed minifilter communication port.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 4.7
EPSS0.14%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiClientWindows 7.4.0 to 7.4.7 | 7.4.8 or later |
| FortiClientWindows 7.2.0 to 7.2.15 | Upgrade past 7.2.15; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A unverified ownership vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.7, FortiClientWindows 7.2 all versions may allow attacker to improper access control via via an exposed minifilter communication port.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.