OS Command Injection in FortiMail - CVE-2026-126158
Published: November 11, 2026
Vulnerability identifier: #VU165200
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126158
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote privileged user to execute arbitrary code.
The vulnerability exists due to improper neutralization of special elements used in an os command ('os command injection'). An authenticated administrator can execute unauthorized code or commands as root via specially crafted HTTP requests.
Affected software
FortiMail
How to mitigate CVE-2026-126158
Install update from vendor's website.
FortiMail - update to 8.0.2