Fortinet FortiMail Multiple Remote Privilege Escalation Vulnerability



Date Discovered

October 18, 2019


Fortinet FortiMail is prone to multiple remote prone privilege-escalation vulnerability. An attacker can exploit these issues to gain elevated privileges, obtain sensitive information or cause denial-of-service conditions.

Technologies Affected

  • Fortinet FortiMail 5.4.0
  • Fortinet FortiMail 5.4.10
  • Fortinet FortiMail 5.4.3
  • Fortinet FortiMail 5.4.8
  • Fortinet FortiMail 6.0.0
  • Fortinet FortiMail 6.0.1
  • Fortinet FortiMail 6.0.3
  • Fortinet FortiMail 6.0.6
  • Fortinet FortiMail 6.2.0


Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To limit the impact of latent vulnerabilities, configure applications to run as a nonadministrative user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Updates are available. Please see the references or vendor advisory for more information.



Danilo Costa from PBI Dynamic IT Security

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