Vulnerability in Fortinet Forticlientwindows

CVE-2026-84386

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 · last modified .

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-84386: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-84386?
CVE-2026-84386 is a medium-severity vulnerability in Fortinet Forticlientwindows, classified under CWE-283. CVSS score: 5.1/10. Published 2026-09-08.
How severe is CVE-2026-84386?
Medium severity. CVSS v3 base score is 5.1 out of 10.