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Vulnerabilities

Vulnerability · CVE-2025-22251

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 ve

Published Jun 10, 2025 · catalog updated Jun 10, 2025 · Fortinet FortiOS

Check if you run it

No confirmed exploitation is on record for CVE-2025-22251. EPSS is 0.40%. Act only if a listed version of Fortinet FortiOS is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Vendor / distro source
Affected products
vendor Fortinet FortiOS 6.4.0 ≤6.4.16

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Fortinet FortiOS 6.4.0 ≤6.4.166.4.0 ≤6.4.16

How to fix CVE-2025-22251

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-22251. EPSS is 0.40%. Act only if a listed version of Fortinet FortiOS is installed.

Which versions are affected?

Compare what you have installed with Fortinet FortiOS 6.4.0 ≤6.4.16 6.4.0 ≤6.4.16. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Fortinet security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2025 · EUVD

    Detected

    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.

  2. Jun 10, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-22251

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-22251

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-17799

    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 sessio

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.