CVE-2024-31489: Fortinet FortiClient

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

AAn improper certificate validation vulnerability [CWE-295] in FortiClientWindows 7.2.0 through 7.2.2, 7.0.0 through 7.0.11, FortiClientLinux 7.2.0, 7.0.0 through 7.0.11 and FortiClientMac 7.0.0 through 7.0.11, 7.2.0 through 7.2.4 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the FortiGate and the FortiClient during the ZTNA tunnel creation

Affected products

• Fortinet FortiClient: from 7.0.0, before 7.0.12 (fixed in 7.0.12); from 7.2.0, before 7.2.3 (fixed in 7.2.3); from 7.2.0, before 7.2.5 (fixed in 7.2.5); version 7.2.0 only

Published 2024-09-10. Last modified 2026-06-17.