CVE-2025-22251

Name: CVE-2025-22251
Creator: NVD / NIST
Published: 2025-06-10T17:21:08.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2025-22251 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in FortiOS 7.6.0, 7.4.0 through 7.4.5, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an unauthenticated attacker to inject unauthorized sessions via crafted FGSP session synchronization packets.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

An improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in FortiOS 7.6.0, 7.4.0 through 7.4.5, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an unauthenticated attacker to inject unauthorized sessions via crafted FGSP session synchronization packets.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.34%

25.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-923

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	>= 6.4.0, < 7.4.6
Fortinet	Fortios	7.6.0

References

https://fortiguard.fortinet.com/psirt/FG-IR-24-287Vendor Advisory

Timeline

Published: Jun 10, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-22251?

How severe is CVE-2025-22251?

CVE-2025-22251 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2025-22251?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-22251?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST