CVE-2025-22251

Q: How do I fix CVE-2025-22251?

Upgrade fortios to 7.4.6 or later.

Q: Is CVE-2025-22251 being actively exploited?

Not that we know of. CVE-2025-22251 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.34% is the estimated probability that it will be exploited in the next 30 days. That is higher than 26% of all scored CVEs.

Q: How severe is CVE-2025-22251?

CVE-2025-22251 has a CVSS v3 base score of 3.1, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-22251 affect?

Published advisories record a fix for fortios (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

LOW

3.1

CVSS v3

NVD

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.

CWE-923

How to fix

Remediation Available

fortiosNVD

Affected:>= 6.4.0, < 7.4.6Fixed in:7.4.6CVE-2025-22251derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.com

Related Vulnerabilities

Other CWE-923 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24974	High	7.5	9.8%	-	Fix
CVE-2025-48999	High	8.8	7.8%	-	Fix
CVE-2021-38487	High	8.2	3.3%	-	Fix
CVE-2019-17440	Critical	10.0	1.7%	-	-
CVE-2022-2663	Medium	5.3	1.5%	-	Fix
CVE-2021-32635	Medium	6.3	1.4%	-	-

Common questions

How do I fix CVE-2025-22251?

Upgrade fortios to 7.4.6 or later.

Is CVE-2025-22251 being actively exploited?

Not that we know of. CVE-2025-22251 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.34% is the estimated probability that it will be exploited in the next 30 days. That is higher than 26% of all scored CVEs.

How severe is CVE-2025-22251?

CVE-2025-22251 has a CVSS v3 base score of 3.1, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-22251 affect?

Published advisories record a fix for fortios (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2025-22251

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-25.