What’s Vulnerable › Vulnerabilities
CVE-2022-45856
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-09-10 · updated 2026-06-17
- Weakness: CWE-295
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 products
- Fortinet FortiClientWindows: from 5.0 before 7.2.1; from 6.4 before 7.2.5; from 6.4 before 7.0.8; from 2.0 before 7.0.7 — fixed in 7.0.7, 7.0.8, 7.2.1, 7.2.5
How to fix
Upgrade to a fixed version: Fortinet FortiClientWindows 7.0.7, 7.0.8, 7.2.1, 7.2.5. Check the vendor advisory for mitigations.
References
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