What is CVE-2025-46373?

CVE-2025-46373 is a high-severity vulnerability in Fortinet Forticlientwindows, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2025-11-18.

How severe is CVE-2025-46373?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Fortinet Forticlientwindows

CVE-2025-46373

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R.

Affected products

Fortinet Forticlientwindows — versions 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-125

Frequently asked questions

What is CVE-2025-46373?: CVE-2025-46373 is a high-severity vulnerability in Fortinet Forticlientwindows, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2025-11-18.
How severe is CVE-2025-46373?: High severity. CVSS v3 base score is 7.1 out of 10.