CVE-2025-64153 Command injection in FortiExtender

Medium 6.7 Published 9 Dec 2025 Updated 14 Jan 2026

An authenticated attacker can execute unauthorized code or commands via a specific HTTP request in Fortinet FortiExtender.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-64153?

CVE-2025-64153 is a medium-severity command injection vulnerability in Fortinet FortiExtender, published on 9 Dec 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.6.0 through 7.6.3, FortiExtender 7.4.0 through 7.4.7, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated attacker to execute unauthorized code or commands via a specific HTTP request.

Weakness: CWE-78

Which versions are affected by CVE-2025-64153?

It affects 1 product.

Products include Fortinet Fortiextender Firmware.

How do I fix CVE-2025-64153?

No fix has been published for CVE-2025-64153 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-2025-64153 being exploited?

There is no known exploitation of CVE-2025-64153 in the wild and no public exploit code.

Sources

Also known as GHSA-8mx4-2q4g-c4v9.