Improper restriction of communication channel to intended endpoints in FortiOS

1) Improper restriction of communication channel to intended endpoints

EUVDB-ID: #VU111047

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-22251

CWE-ID: CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The vulnerability exists due to improper restriction of communication channel to intended endpoints in FGSP. An unauthenticated attacker can inject unauthorized sessions via crafted FGSP session synchronization packets.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FortiOS: 6.4.0 - 7.6.3

CPE2.3

• cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.4:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.5:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.7:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.9:*:*:*:*:*:*:*

External links

https://www.fortiguard.com/psirt/FG-IR-24-287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.