CVE-2025-59923

ℹ️ low

Summary

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.

CVSS Score

2.7

Low

EPSS Score

0.0

Exploit Probability

Published Date

2025-12-09

First Seen: 2026-01-05

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 1.6% of all 326,604 vulnerabilities in our database.

#321,495

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Dec 9, 2025

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2025-12-11

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CWE IDs (Weakness Types)

CWE-284

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
fortinet	fortiauthenticator	Affected	≥ 6.3.0 ≤ 6.6.4

🔗 References 1

https://fortiguard.fortinet.com/psirt/FG-IR-25-616

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-44277	⛔ critical	9.8	0.1	A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticat...	2026-05-12
CVE-2026-21743	⚠️ high	7.2	0.0	A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all ver...	2026-02-10
CVE-2025-57823	ℹ️ low	2.7	0.0	A direct request ('forced browsing') vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticato...	2025-12-09
CVE-2022-23439	🔶 medium	4.7	0.1	A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison w...	2025-01-22
CVE-2024-23664	🔶 medium	6.1	0.3	A URL redirection to untrusted site ('open redirect') in Fortinet FortiAuthenticator version 6.6.0, version 6.5.3 and be...	2024-06-03
CVE-2022-22302	🔶 medium	5.3	0.1	A clear text storage of sensitive information (CWE-312) vulnerability in both FortiGate version 6.4.0 through 6.4.1, 6.2...	2023-07-11

These CVEs affect the same products