How severe is CVE-2022-45856?

CVE-2022-45856 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-45856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45856?

CVE-2022-45856 primarily affects Fortinet Forticlient. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-45856?

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

Does CVE-2022-45856 have an EU (EUVD) identifier?

Yes. CVE-2022-45856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-48709.

When was CVE-2022-45856 published?

CVE-2022-45856 was published on 2024-09-10 and last updated on 2026-06-17.

CVE-2022-45856

CVE-2022-45856 is a medium-severity vulnerability in Fortinet Forticlient with a CVSS 3.x base score of 4.8. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-48709
Weakness: CWE-295
Affected product: Fortinet Forticlient
Published: 2024-09-10
Last modified: 2026-06-17

Description

An improper certificate validation vulnerability [CWE-295] in FortiClientWindows 6.4 all versions, 7.0.0 through 7.0.7, FortiClientMac 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientLinux 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientAndroid 6.4 all versions, 7.0 all versions, 7.2.0 and FortiClientiOS 5.6 all versions, 6.0.0 through 6.0.1, 7.0.0 through 7.0.6 SAML SSO feature may allow an unauthenticated attacker to man-in-the-middle the communication between the FortiClient and both the service provider and the identity provider.

Frequently asked questions

What is CVE-2022-45856?: An improper certificate validation vulnerability [CWE-295] in FortiClientWindows 6.4 all versions, 7.0.0 through 7.0.7, FortiClientMac 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientLinux 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientAndroid 6.4 all versions, 7.0 all versions, 7.2.0 and FortiClientiOS 5.6 all versions, 6.0.0 through 6.0.1, 7.0.0 through 7.0.6 SAML SSO feature may allow an unauthenticated attacker to man-in-the-middle the communication between the FortiClient and both the service provider and the identity provider.
How severe is CVE-2022-45856?: CVE-2022-45856 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-45856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-45856?: CVE-2022-45856 primarily affects Fortinet Forticlient. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-45856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2022-45856 have an EU (EUVD) identifier?: Yes. CVE-2022-45856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-48709.
When was CVE-2022-45856 published?: CVE-2022-45856 was published on 2024-09-10 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-22-230

Affected products (5)

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:android:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:mac_os:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:iphone_os:*:*

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