CVE-2026-126167 Command injection in FortiMail
Domain admins can inject commands via crafted HTTP requests to delete other tenants' users, run root commands, and read or write files on FortiMail.
- 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-2026-126167?
CVE-2026-126167 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 a command ('command injection') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.2, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an authenticated remote attacker with domain admin or admin privileges to delete users of other tenant domains on a paired FortiAuthenticator, execute arbitrary code as root or arbitrary CLI commands, and read or write arbitrary files as root via crafted HTTP requests to the administrative interface.
Weakness: CWE-77
Which versions are affected by CVE-2026-126167?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-126167?
No fix has been published for CVE-2026-126167 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-2026-126167 being exploited?
There is no known exploitation of CVE-2026-126167 in the wild and no public exploit code.
Sources
Also known as GHSA-mjmp-97qr-g3pc.