CVE-2026-126169: Fortinet FortiMail argument injection in administrative interface

CVE-2026-126169 · Severity: high · CVSS 7.2 · Published 2026-11-11

FortiMail is an email security appliance that protects organizations from email-based threats. An authenticated admin or domain admin with access to the administrative web interface can inject malicious commands that allow them to execute code as root, delete users on connected authentication systems, or read and write arbitrary files—potentially compromising the entire email infrastructure and connected systems.

Technologies: Fortinet FortiMail. Vendors: Fortinet.

Quick answers

Is CVE-2026-126169 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-126169 being exploited in the wild.
How severe is CVE-2026-126169?
High severity, with a CVSS score of 7.2, published 11 November 2026.
Which products and versions are affected?
Fortinet FortiMail 7.2 all versions, 7.4.0 through 7.4.8, 7.6.0 through 7.6.6, 8.0.0 through 8.0.2.
Is there a fix for CVE-2026-126169?
Yes: fixed in FortiMail 7.4.9 or above, 7.6.7 or above, 8.0.3 or above; 7.2 requires migration to a fixed release. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-126169 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-126169?
Check whether you run Fortinet FortiMail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: FortiMail 7.4.9 or above, 7.6.7 or above, 8.0.3 or above; 7.2 requires migration to a fixed release

Technical details

An argument injection vulnerability in FortiMail's administrative GUI allows authenticated attackers with domain admin or admin privileges to craft HTTP requests that bypass argument delimiters and execute arbitrary CLI commands or code as root. The vulnerability affects versions 7.2 (all), 7.4.0–7.4.8, 7.6.0–7.6.6, and 8.0.0–8.0.2. An attacker can also delete users on a paired FortiAuthenticator or manipulate arbitrary files, requiring only valid admin credentials and network access to the web interface.

Affected products

  • Fortinet FortiMail 7.2 all versions, 7.4.0 through 7.4.8, 7.6.0 through 7.6.6, 8.0.0 through 8.0.2

Timeline

  • 2026-11-10: disclosed
  • 2026-10-05: patched: FortiMail Cloud updated to v7.6.7 GA or v8.0.2 GA

References

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