Improper certificate validation in Fortinet FortiClientiOS
Priority LOW 26CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00231 14th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | FortiClientiOS | 7.0.3 – 7.0.6; 7.0.0 – 7.0.1; 6.0.0 – 6.0.1; 5.6.5 – 5.6.6; 5.6.0 – 5.6.1; 5.4.3 – 5.4.4; 5.4.0 – 5.4.1; 5.2.0 – 5.2.3; 5.0.0 – 5.0.3; 4.0.0 – 4.0.2; 2.0.0 – 2.0.1 | — | No fix listed | CNA |
| Fortinet | FortiClientAndroid | 7.2.0; 7.0.6 – 7.0.7; 7.0.2 – 7.0.3; 7.0.0; 6.4.6; 6.4.4; 6.4.1; 6.0.0; 5.6.0; 5.4.0 – 5.4.2; 5.2.0 – 5.2.8; 5.0.0 – 5.0.3 | — | No fix listed | CNA |
| Fortinet | FortiClientMac | 7.2.0 – 7.2.4; 7.0.0 – 7.0.13; 6.4.0 – 6.4.10 | — | No fix listed | CNA |
| Fortinet | FortiClientLinux | 7.2.0 – 7.2.4; 7.0.0 – 7.0.13; 6.4.7 – 6.4.9; 6.4.0 – 6.4.4 | — | No fix listed | CNA |
| Fortinet | FortiClientWindows | 7.0.0 – 7.0.7; 6.4.0 – 6.4.10 | — | No fix listed | CNA |
- FortiClientiOS VendorFortinet Affected 7.0.3 – 7.0.6; 7.0.0 – 7.0.1; 6.0.0 – 6.0.1; 5.6.5 – 5.6.6; 5.6.0 – 5.6.1; 5.4.3 – 5.4.4; 5.4.0 – 5.4.1; 5.2.0 – 5.2.3; 5.0.0 – 5.0.3; 4.0.0 – 4.0.2; 2.0.0 – 2.0.1 Fixed in — No fix listed CNA
- FortiClientAndroid VendorFortinet Affected 7.2.0; 7.0.6 – 7.0.7; 7.0.2 – 7.0.3; 7.0.0; 6.4.6; 6.4.4; 6.4.1; 6.0.0; 5.6.0; 5.4.0 – 5.4.2; 5.2.0 – 5.2.8; 5.0.0 – 5.0.3 Fixed in — No fix listed CNA
- FortiClientMac VendorFortinet Affected 7.2.0 – 7.2.4; 7.0.0 – 7.0.13; 6.4.0 – 6.4.10 Fixed in — No fix listed CNA
- FortiClientLinux VendorFortinet Affected 7.2.0 – 7.2.4; 7.0.0 – 7.0.13; 6.4.7 – 6.4.9; 6.4.0 – 6.4.4 Fixed in — No fix listed CNA
- FortiClientWindows VendorFortinet Affected 7.0.0 – 7.0.7; 6.4.0 – 6.4.10 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:android:*:* | 5.0 to before 7.2.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:* | 6.4 to before 7.2.5 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:mac_os:*:* | 6.4 to before 7.2.5 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:* | 6.4 to before 7.0.8 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:iphone_os:*:* | 2.0 to before 7.0.7 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:android:*:* Versions 5.0 to before 7.2.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:* Versions 6.4 to before 7.2.5 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:mac_os:*:* Versions 6.4 to before 7.2.5 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:* Versions 6.4 to before 7.0.8 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:iphone_os:*:* Versions 2.0 to before 7.0.7 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-45856
- 2026-10-03 Alias added: GHSA-r657-x7w7-q6j3
References
More Fortinet Forticlient vulnerabilities
- TI-2019-13180 An unquoted service path vulnerability in the FortiClient FortiTray component of… CVSS 3.1CRITICAL 9.8
- TI-2023-24393 Code injection in Fortinet FortiClientLinux CVSS 3.1CRITICAL 9.4
- TI-2017-10335 Information disclosure in Fortinet FortiClient for Windows CVSS 3.0HIGH 8.8
- TI-2016-06998 In FortiClientWindows 5.4.1 and 5.4.2, an attacker may escalate privilege via a FortiClientNamedPipe vulnerability. CVSS 3.0HIGH 8.8
- TI-2019-03954 Untrusted search path in Fortinet FortiClientWindows CVSS 3.1HIGH 8.6
- TI-2017-05007 A privilege escalation in Fortinet FortiClient Windows 5.4.3 and earlier as well as 5.6.0… CVSS 3.0HIGH 8.1
Sources
- CVE-2022-45856 · CVE Program
- CVE-2022-45856 · NVD
- FIRST EPSS
- GHSA-r657-x7w7-q6j3 · GitHub Advisory Database · CC BY 4.0
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