Fortinet

CVE-2026-126166: 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 th

CVE-2026-126166 Nov 11, 2026 Source: Vendor

In brief. Fortinet published CVE-2026-126166: 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 th on November 11, 2026. It credits 1 researcher or team for 1 CVE.

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

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-126166

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