Detections
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Fortinet FortiManager XML injection (FG-IR-26-222)

high Nessus Plugin ID 378655

Synopsis

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

Description

The version of FortiManager installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the FG-IR-26-222 advisory.

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

Solution

For 7.2.x, upgrade to FortiManager version 7.2.13 or later. For 7.4.x, upgrade to FortiManager version 7.4.12 or later.
For 7.6.x, upgrade to FortiManager version 7.6.8 or later. For 8.0.x, upgrade to FortiManager version 8.0.1 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-26-222

Plugin Details

Severity: High

ID: 378655

File Name: fortimanager_FG-IR-26-222.nasl

Version: 1.1

Type: Local

Family: Firewalls

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-126177

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:C/C:L/I:H/A:L

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

Vulnerability Information

CPE: cpe:/a:fortinet:fortimanager

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/10/2026

Vulnerability Publication Date: 11/10/2026

Reference Information

CVE: CVE-2026-126176, CVE-2026-126177