What is CVE-2025-59923?

CVE-2025-59923 is a low-severity vulnerability in Fortinet Fortiauthenticator, classified under Improper Access Control. CVSS score: 2.7/10. Published 2025-12-09.

How severe is CVE-2025-59923?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Fortinet Fortiauthenticator

CVE-2025-59923

An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow an authenticated attacker…

EPSS: 0.002 (8.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.

Affected products

Fortinet Fortiauthenticator — versions 6.6.0, 6.5.0, 6.4.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

psirt@fortinet.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59923?: CVE-2025-59923 is a low-severity vulnerability in Fortinet Fortiauthenticator, classified under Improper Access Control. CVSS score: 2.7/10. Published 2025-12-09.
How severe is CVE-2025-59923?: Low severity. CVSS v3 base score is 2.7 out of 10.