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CVE-2022-45856

MEDIUM
5.9
CVSS Score
Published: September 10, 2024 at 02:37 PM UTC
Updated: June 17, 2026 at 05:10 AM UTC
1 product affected across 1 vendorForticlient

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Forticlient· Forticlient
95%
2.0 ≤ v < 7.0.72.0.0 ≤ v ≤ 2.0.14.0.0 ≤ v ≤ 4.0.25.0 ≤ v < 7.2.15.0.0 ≤ v ≤ 5.0.35.2.0 ≤ v ≤ 5.2.35.2.0 ≤ v ≤ 5.2.85.4.0 ≤ v ≤ 5.4.15.4.0 ≤ v ≤ 5.4.25.4.3 ≤ v ≤ 5.4.45.6.0 ≤ v ≤ 5.6.15.6.5 ≤ v ≤ 5.6.66.0.0 ≤ v ≤ 6.0.16.4 ≤ v < 7.0.86.4 ≤ v < 7.2.56.4.0 ≤ v ≤ 6.4.106.4.0 ≤ v ≤ 6.4.46.4.7 ≤ v ≤ 6.4.97.0.0 ≤ v ≤ 7.0.17.0.0 ≤ v ≤ 7.0.137.0.0 ≤ v ≤ 7.0.77.0.2 ≤ v ≤ 7.0.37.0.3 ≤ v ≤ 7.0.67.0.6 ≤ v ≤ 7.0.77.2.0 ≤ v ≤ 7.2.42.0.04.0.05.0.05.2.05.4.05.4.35.6.05.6.56.0.06.4.06.4.16.4.46.4.66.4.77.0.07.0.27.0.37.0.67.2.0
Affected range stops below 7.0.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://fortiguard.fortinet.com/psirt/FG-IR-22-230

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

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