How severe is CVE-2025-22251?

CVE-2025-22251 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-22251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-22251?

CVE-2025-22251 primarily affects Fortinet Fortios. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-22251?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-22251 have an EU (EUVD) identifier?

Yes. CVE-2025-22251 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17799.

When was CVE-2025-22251 published?

CVE-2025-22251 was published on 2025-06-10 and last updated on 2026-06-17.

CVE-2025-22251

CVE-2025-22251 is a low-severity vulnerability in Fortinet Fortios with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-923.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-17799
Weakness: CWE-923
Affected product: Fortinet Fortios
Published: 2025-06-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 versions may allow an unauthenticated attacker to inject unauthorized sessions via crafted FGSP session synchronization packets.
How severe is CVE-2025-22251?: CVE-2025-22251 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-22251 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-22251?: CVE-2025-22251 primarily affects Fortinet Fortios. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-22251?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-22251 have an EU (EUVD) identifier?: Yes. CVE-2025-22251 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17799.
When was CVE-2025-22251 published?: CVE-2025-22251 was published on 2025-06-10 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.0:*:*:*:*:*:*:*

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