CVE-2019-17652: Fortinet FortiClient

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

A stack buffer overflow vulnerability in FortiClient for Linux 6.2.1 and below may allow a user with low privilege to cause FortiClient processes running under root priviledge crashes via sending specially crafted "StartAvCustomScan" type IPC client requests to the fctsched process due the argv data not been well sanitized.

Affected products

• Fortinet FortiClient: up to and including 6.2.1

Published 2020-02-06. Last modified 2026-06-17.