Fortinet FortiMail up to 7.2.8/7.4.8/7.6.6/8.0.2 Administrative Interface argument injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiMail up to 7.2.8/7.4.8/7.6.6/8.0.2. Affected is an unknown function of the component Administrative Interface. Performing a manipulation results in argument injection. This vulnerability is reported as CVE-2026-126168. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Fortinet FortiMail up to 7.2.8/7.4.8/7.6.6/8.0.2. This affects an unknown functionality of the component Administrative Interface. The manipulation with an unknown input leads to a argument injection vulnerability. CWE is classifying the issue as CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A improper neutralization of argument delimiters in a command ('argument 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.

The advisory is shared at fortiguard.fortinet.com. This vulnerability is uniquely identified as CVE-2026-126168 since 11/10/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 7.2.9, 7.4.8, 7.6.6 or 8.0.2 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Fortinet

Name

• FortiMail

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4
• 7.4.5
• 7.4.6
• 7.4.7
• 7.4.8
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 7.6.6
• 8.0.0
• 8.0.1
• 8.0.2

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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