CVE-2025-46373: Fortinet FortiClient

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A Heap-based Buffer Overflow vulnerability [CWE-122] vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.8 may allow an authenticated local IPSec user to execute arbitrary code or commands via "fortips_74.sys". The attacker would need to bypass the Windows heap integrity protections

Affected products

• Fortinet FortiClient: from 7.2.0, before 7.2.9 (fixed in 7.2.9); from 7.4.0, before 7.4.4 (fixed in 7.4.4)

Published 2025-11-18. Last modified 2026-06-17.