FortiClient and EMS
CVE-2025-46373: Heap-based Buffer Overflow in FortiClientWindows
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".
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiClientWindows 7.4.0 to 7.4.3 | 7.4.4 or later |
| FortiClientWindows 7.2.0 to 7.2.8 | 7.2.9 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.