What’s Vulnerable › Vulnerabilities
CVE-2021-22127
- Severity: high (CVSS 8.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-04-06 · updated 2026-06-17
- Weakness: CWE-78
Description
An improper input validation vulnerability in FortiClient for Linux 6.4.x before 6.4.3, FortiClient for Linux 6.2.x before 6.2.9 may allow an unauthenticated attacker to execute arbitrary code on the host operating system as root via tricking the user into connecting to a network with a malicious name.
Affected products
- Fortinet FortiClientWindows: before 6.2.9; from 6.4.0 before 6.4.3 — fixed in 6.2.9, 6.4.3
How to fix
Upgrade to a fixed version: Fortinet FortiClientWindows 6.2.9, 6.4.3. Check the vendor advisory for mitigations.
References
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