Medium [CVE-2026-84386] Arbitrary process termination from exposed minifilter communication port
This medium-severity Fortinet advisory covers CVE-2026-84386 affecting FortiClientWindows.
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Summary
CVSSv3 Score:
4.7
An Unverified Ownership Vulnerability [CWE-283] in FortiClient Windows fortimon3 driver may allow an authenticated attacker to terminate arbitrary processes via an exposed minifilter communication port.
Revised on 2026-09-08 00:00:00
Affected product named by the advisory: FortiClientWindows.
- FortiClientWindows FortiClientWindows: 7.2 through 8.0 (vendor-listed versions)
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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