What is CVE-2025-62439?

CVE-2025-62439 is a medium-severity vulnerability in Fortinet Fortios, classified under Improper Verification of Source of a Communication Channel. CVSS score: 4.2/10. Published 2026-02-10.

How severe is CVE-2025-62439?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Fortinet Fortios

CVE-2025-62439

An Improper Verification of Source of a Communication Channel vulnerability [CWE-940] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions may allow an authenticated user with knowledge of FSSO policy configurations to gain unauthorized access to protected network resources via crafted requests.

EPSS: 0.001 (3.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-940 — Improper Verification of Source of a Communication Channel

References

Frequently asked questions

What is CVE-2025-62439?: CVE-2025-62439 is a medium-severity vulnerability in Fortinet Fortios, classified under Improper Verification of Source of a Communication Channel. CVSS score: 4.2/10. Published 2026-02-10.
How severe is CVE-2025-62439?: Medium severity. CVSS v3 base score is 4.2 out of 10.