Fortinet FortiAuthenticator up to 6.4.10/6.5.6/6.6.4 access control

Summaryinfo

A vulnerability labeled as critical has been found in Fortinet FortiAuthenticator up to 6.4.10/6.5.6/6.6.4. Impacted is an unknown function. Such manipulation leads to access control. This vulnerability is referenced as CVE-2025-59923. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Fortinet FortiAuthenticator up to 6.4.10/6.5.6/6.6.4. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality. CVE summarizes:

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.

The advisory is available at fortiguard.fortinet.com. This vulnerability is handled as CVE-2025-59923 since 09/23/2025. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-2806). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Fortinet FortiAuthenticator

Productinfo

Vendor

• Fortinet

Name

• FortiAuthenticator

Version

• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8
• 6.4.9
• 6.4.10
• 6.5.0
• 6.5.1
• 6.5.2
• 6.5.3
• 6.5.4
• 6.5.5
• 6.5.6
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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