Vulnerability · Published Sep 8, 2026 · Assigned by fortinet
CVE-2026-84386
Medium 4.7
In plain English
A medium-severity security flaw in FortiClientWindows from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)4.7Medium
Exploit odds (30 days)0.1%top 96.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiClientWindows | 7.4.0 – through 7.4.77.2.0 – through 7.2.15 |
Weakness: CWE-283 · 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