CVE-2021-26116 Command injection in Fortinet FortiAuthenticator

What is CVE-2021-26116?

CVE-2021-26116 is a medium-severity command injection vulnerability in Fortinet FortiAuthenticator, published on 6 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An improper neutralization of special elements used in an OS command vulnerability in the command line interpreter of FortiAuthenticator before 6.3.1 may allow an authenticated attacker to execute unauthorized commands via specifically crafted arguments to existing commands.

Weakness: CWE-78

Which versions are affected by CVE-2021-26116?

It affects 1 product.

Products include Fortinet Fortiauthenticator.

How do I fix CVE-2021-26116?

No fix has been published for CVE-2021-26116 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-26116 being exploited?

There is no known exploitation of CVE-2021-26116 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiAuthenticator

• CVE-2026-44277 Missing authorization in FortiAuthenticator Critical 9.1
• CVE-2013-6990 Privilege escalation in n/a Critical 9.0
• CVE-2021-43067 Information disclosure in Fortinet FortiAuthenticator High 8.3
• CVE-2021-22124 Denial of service in Fortinet FortiSandbox, FortiAuthenticator High 7.5
• CVE-2015-1455 Hardcoded credentials in n/a High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5965-3x5m-9954.