CVE-2026-84386

Published Sep 8, 2026 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiClientWindows

unaffected

Version	Status	Constraints
`7.4.0`	affected	≤ 7.4.7
`7.2.0`	affected	≤ 7.2.15

No data.

Vendor Product Versions

Fortinet

Forticlientwindows

Version	Status	Scheme	Platform
`[7.4.0,7.4.7]`	affected	semver	—
`[7.2.0,7.2.15]`	affected	semver	—

Remediation

Vendor Solution

Upgrade to FortiClientWindows version 8.0.0 or above Upgrade to FortiClientWindows version 7.4.8 or above

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.143% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

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

History

Oct 2, 2026 4:15 PM Title updated View changes

Type	Values Removed	Values Added
Title	Unverified Ownership Access Control Vulnerability in FortiClientWindows

Oct 2, 2026 3:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Oct 2, 2026 2:45 PM Description updated View changes

Type	Values Removed	Values Added
Description	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 <insert attack vector here>	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.

Sep 8, 2026 6:30 PM Title updated View changes

Type	Values Removed	Values Added
Title		Unverified Ownership Access Control Vulnerability in FortiClientWindows

Sep 8, 2026 4:45 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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 <insert attack vector here>
First Time appeared		Fortinet Fortinet forticlientwindows
Weaknesses		CWE-283
CPEs		cpe:2.3:a:fortinet:forticlientwindows:7.2.0:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.10:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.11:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.12:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.13:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.14:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.15:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.1:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.2:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.3:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.4:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.5:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.6:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.7:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.8:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.2.9:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.0:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.1:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.2:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.3:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.4:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.5:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.6:::::::* cpe:2.3:a:fortinet:forticlientwindows:7.4.7:::::::*
Vendors & Products		Fortinet Fortinet forticlientwindows
References		https://fortiguard.fortinet.com/psirt/FG-IR-26-165
Metrics		cvssV3_1 `{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H/E:P/RL:O/RC:C'}`