CVE-2020-9290: Fortinet FortiClient

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

An Unsafe Search Path vulnerability in FortiClient for Windows online installer 6.2.3 and below may allow a local attacker with control over the directory in which FortiClientOnlineInstaller.exe and FortiClientVPNOnlineInstaller.exe resides to execute arbitrary code on the system via uploading malicious Filter Library DLL files in that directory.

Affected products

• Fortinet FortiClient: up to and including 6.2.3
• Fortinet FortiClient Virtual Private Network: up to and including 6.2.3

Published 2020-03-15. Last modified 2026-06-17.