CVE-2025-59923

Published Dec 9, 2025 CVSS 3.1 · 2.6 Low EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiAuthenticator

unaffected

Version	Status	Constraints
`6.6.0`	affected	≤ 6.6.6
`6.5.0`	affected	≤ 6.5.6
`6.4.0`	affected	≤ 6.4.10

Configuration 1 [-]

cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

Upgrade to FortiAuthenticator version 8.0.0 or above Upgrade to FortiAuthenticator version 6.6.7 or above

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.228% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

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

History

Dec 11, 2025 5:15 PM Description updated. Affected versions updated View changes

Type	Values Removed	Values Added
Description	An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.4, 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.	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.
CPEs		cpe:2.3:a:fortinet:fortiauthenticator:6.6.5:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.6:::::::*

Dec 9, 2025 9:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Dec 9, 2025 8:30 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:fortinet:fortiauthenticator::::::::

Dec 9, 2025 5:45 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.4, 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.
First Time appeared		Fortinet Fortinet fortiauthenticator
Weaknesses		CWE-284
CPEs		cpe:2.3:a:fortinet:fortiauthenticator:6.4.0:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.10:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.1:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.2:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.3:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.4:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.5:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.6:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.7:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.8:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.4.9:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.0:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.1:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.2:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.3:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.4:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.5:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.5.6:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.1:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.2:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.3:::::::* cpe:2.3:a:fortinet:fortiauthenticator:6.6.4:::::::*
Vendors & Products		Fortinet Fortinet fortiauthenticator
References		https://fortiguard.fortinet.com/psirt/FG-IR-25-616
Metrics		cvssV3_1 `{'score': 2.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:U/RC:C'}`