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Fortinet Fortigate Trusted hosts bypass via SSH (FG-IR-25-545)

low Nessus Plugin ID 275611

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Synopsis

Fortinet Firewall is missing one or more security-related updates.

Description

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-25-545 advisory.

 - An Improper Privilege Management vulnerability [CWE-269] in FortiOS, FortiProxy and FortiPAM may allow an authenticated administrator to bypass the trusted host policy via crafted CLI command. (CVE-2025-54821)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

For 6.4.x / 7.0.x / 7.2.x / 7.4.x, see vendor advisory. For 7.6.x, upgrade to Fortigate version 7.6.4 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-25-545

Plugin Details

Severity: Low

ID: 275611

File Name: fortigate_FG-IR-25-545.nasl

Version: 1.2

Type: local

Family: Firewalls

Published: 11/18/2025

Updated: 11/20/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Low

Base Score: 0.8

Temporal Score: 0.6

Vector: CVSS2#AV:L/AC:H/Au:M/C:N/I:P/A:N

CVSS Score Source: CVE-2025-54821

CVSS v3

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.7

Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/model, Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 11/18/2025

Vulnerability Publication Date: 11/18/2025

Reference Information

CVE: CVE-2025-54821

IAVA: 2025-A-0770