Authentication bypass in FortiOS and FortiProxy

1) Authentication bypass using an alternate path or channel

EUVDB-ID: #VU102593

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2025-24472,CVE-2024-55591

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper authentication within the Node.js websocket module in the web management interface. A remote non-authenticated attacker can bypass authentication and gain super-admin privileges on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 7.0.0 - 7.0.16

FortiProxy: 7.0.0 - 7.2.99

CPE2.3

• cpe:2.3:o:fortinet:fortios:7.0.16:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:7.0.19:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:7.2.99:*:*:*:*:*:*:*

External links

http://www.fortiguard.com/psirt/FG-IR-24-535

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.