CVE-2026-126158 Command injection in FortiMail
An authenticated FortiMail administrator can execute commands as root via crafted HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-126158?
CVE-2026-126158 is a high-severity command injection vulnerability in Fortinet FortiMail, published on 11 Nov 2026. 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') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1 may allow an authenticated administrator to execute unauthorized code or commands as root via specially crafted HTTP requests.
Weakness: CWE-78
Which versions are affected by CVE-2026-126158?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-126158?
No fix has been published for CVE-2026-126158 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-2026-126158 being exploited?
There is no known exploitation of CVE-2026-126158 in the wild and no public exploit code.
Sources
Also known as GHSA-73gc-wqhv-38mj.