Detections
Analytics

Fortinet FortiClient (Windows) 7.2.x / 7.4.x < 7.4.8 Arbitrary Process Termination (FG-IR-26-165)

medium Nessus Plugin ID 346901

Synopsis

An application installed on the remote Windows host is affected by an unverified ownership vulnerability.

Description

The version of FortiClient installed on the remote Windows host is 7.2.x or 7.4.x prior to 7.4.8. It is, therefore, affected by a vulnerability as referenced in the FG-IR-26-165 advisory.

 - An unverified ownership vulnerability [CWE-283] in the FortiClient Windows fortimon3 driver may allow an authenticated attacker to terminate arbitrary processes via an exposed minifilter communication port. This affects FortiClientWindows 7.4.0 through 7.4.7 and FortiClientWindows 7.2 all versions.
 (CVE-2026-84386)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to FortiClient (Windows) version 7.4.8 or later.

See Also

https://fortiguard.fortinet.com/psirt/FG-IR-26-165

Plugin Details

Severity: Medium

ID: 346901

File Name: forticlient_FG-IR-26-165.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows

Published: 9/17/2026

Updated: 9/17/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.53

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:P/A:C

CVSS Score Source: CVE-2026-84386

CVSS v3

Risk Factor: Medium

Base Score: 5.1

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

Vulnerability Information

CPE: cpe:/a:fortinet:forticlient

Required KB Items: installed_sw/FortiClient

Patch Publication Date: 9/8/2026

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-84386