vulnerability
Fortinet FortiClient: CVE-2021-43066: Privilege escalation in installer
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | May 3, 2022 | Jun 25, 2025 | Mar 25, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
May 3, 2022
Added
Jun 25, 2025
Modified
Mar 25, 2026
Description
An external control of file name or path vulnerability [CWE-73] in FortiClient Windows may allow an unprivileged attacker to delete or execute files with admin rights via the MSI installer.
Solution
fortinet-forticlient-upgrade-latest
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43066
- https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-43066
- https://www.fortiguard.com/psirt/FG-IR-21-154
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-30019
- CVE-2021-43066
- https://attackerkb.com/topics/CVE-2021-43066
- CWE-668
- EUVD-EUVD-2021-30019
Rapid7 Labs
2026 Global Threat Landscape Report
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