CVE-2021-22123 Command injection in Fortinet FortiWeb

What is CVE-2021-22123?

CVE-2021-22123 is a high-severity command injection vulnerability in Fortinet Fortiweb, published on 1 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An OS command injection vulnerability in FortiWeb's management interface 6.3.7 and below, 6.2.3 and below, 6.1.x, 6.0.x, 5.9.x may allow a remote authenticated attacker to execute arbitrary commands on the system via the SAML server configuration page.

Weakness: CWE-78

Which versions are affected by CVE-2021-22123?

It affects 1 product.

Products include Fortinet Fortiweb.

How do I fix CVE-2021-22123?

No fix has been published for CVE-2021-22123 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-2021-22123 being exploited?

There is no known exploitation of CVE-2021-22123 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Fortinet Fortiweb

• CVE-2025-25257 Fortinet FortiWeb SQL Injection Exploited Critical 9.6
• CVE-2025-64446 Fortinet FortiWeb Path Traversal Exploited Critical 9.4
• CVE-2025-58034 Fortinet FortiWeb OS Command Injection Exploited Medium 6.7
• CVE-2020-29015 SQL injection in Fortinet FortiWeb Critical 9.8
• CVE-2020-29016 Memory corruption in Fortinet FortiWeb Critical 9.8

All Fortinet Fortiweb vulnerabilities

Sources

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

Also known as GHSA-r6qx-2c6r-vjjf.