Detections
Analytics

Fortinet FortiAnalyzer Missing authentication check in OFTP service (FG-IR-25-378)

medium Nessus Plugin ID 270409

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Synopsis

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

Description

The version of FortiAnalyzer installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-25-378 advisory.

 - An improper authentication vulnerability [CWE-287] in Fortinet FortiAnalyzer version 7.6.0 through 7.6.3 and before 7.4.6 allows an unauthenticated attacker to obtain information pertaining to the device's health and status, or cause a denial of service via crafted OFTP requests. (CVE-2025-53845)

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, see vendor advisory. For 7.4.x, upgrade to FortiAnalyzer version 7.4.7 or later. For 7.6.x, upgrade to FortiAnalyzer version 7.6.4 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-25-378

Plugin Details

Severity: Medium

ID: 270409

File Name: fortianalyzer_FG-IR-25-378.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 10/15/2025

Updated: 10/15/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2025-53845

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/a:fortinet:fortianalyzer

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/14/2025

Vulnerability Publication Date: 10/14/2025

Reference Information

CVE: CVE-2025-53845