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 with at least read-only admin permission to obtain the credentials of other administrators' messaging services via crafted requests.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Fortinet Fortiauthenticator — versions 6.6.0, 6.5.0, 6.4.0
Weakness classification (CWE)
References
- fortiguard.fortinet.com/psirt/FG-IR-25-616 (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.