Fortinet Fortigate Weak authentication - FGFM protocol (FG-IR-24-042)

high Nessus Plugin ID 249169

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-24-042 advisory.

- An authentication bypass using an alternate path or channel [CWE-288] vulnerability in Fortinet FortiOS version 6.4.0 through 6.4.15 and before 6.2.16, FortiProxy version 7.4.0 through 7.4.2, 7.2.0 through 7.2.8 and before 7.0.15 & FortiPAM before version 1.2.0 allows an unauthenticated attacker to seize control of a managed device via crafted FGFM requests, if the device is managed by a FortiManager, and if the attacker knows that FortiManager's serial number. (CVE-2024-26009)

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

Solution

For 6.0.x, see vendor advisory. For 6.2.x, upgrade to Fortigate version 6.2.17 or later. For 6.4.x, upgrade to Fortigate version 6.4.16 or later.

Plugin Details

Severity: High

ID: 249169

File Name: fortigate_FG-IR-24-042.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 8/12/2025

Updated: 8/12/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2024-26009

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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: 8/12/2025

Vulnerability Publication Date: 8/12/2025

Reference Information

CVE: CVE-2024-26009

Detections

Analytics