Unverified Ownership in Fortinet FortiClient for Windows - CVE-2026-84386
Published: September 9, 2026
Vulnerability identifier: #VU148730
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84386
CWE-ID: CWE-283
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to damange or delete data.
The vulnerability exists due to unverified ownership. An authenticated attacker can terminate arbitrary processes via an exposed minifilter communication port.
Affected software
Fortinet FortiClient for Windows
How to mitigate CVE-2026-84386
Install update from vendor's website.
Fortinet FortiClient for Windows - update to 7.4.8