CVE-2025-46373: A Heap-based Buffer Overflow vulnerability [CWE-122] vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.
CVE-2025-46373 · Severity: high · CVSS 7.8 · Published 2025-11-18
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
No. Junglewise Threat Intelligence has no report of CVE-2025-46373 being exploited in the wild.
How severe is CVE-2025-46373?
High severity, with a CVSS score of 7.8, published 18 November 2025.
Which products and versions are affected?
Fortinet Forticlient. The advisory does not name versions.
Is there a fix for CVE-2025-46373?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-46373?
Check whether you run Fortinet Forticlient. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.