Advisory Published

FG-IR-24-472: TACACS+ authentication bypass

First published: Tue May 13 2025(Updated: )

A missing authentication for critical function vulnerability [CWE-306] in FortiOS, FortiProxy, and FortiSwitchManager TACACS+ configured to use a remote TACACS+ server for authentication, that has itself been configured to use ASCII authentication may allow an attacker with knowledge of an existing admin account to access the device as a valid admin via an authentication bypass.

Affected SoftwareAffected VersionHow to fix
FortiOS=.
FortiOS>=7.4.4<=7.4.6
Fortinet FortiProxy SSL VPN webmode>=7.6.0<=7.6.1
Fortinet FortiSwitchManager=.

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Frequently Asked Questions

  • What is the severity of FG-IR-24-472?

    The severity of FG-IR-24-472 is considered critical due to the potential for unauthenticated access to critical functions.

  • How do I fix FG-IR-24-472?

    To fix FG-IR-24-472, upgrade FortiOS to version 7.6.1 or later, FortiProxy to version 7.6.2 or later, or FortiSwitchManager to version 7.2.6.

  • Which products are affected by FG-IR-24-472?

    FG-IR-24-472 affects FortiOS, FortiProxy, and FortiSwitchManager based on their configured versions.

  • What is the impact of FG-IR-24-472?

    The impact of FG-IR-24-472 allows attackers to exploit missing authentication, potentially compromising critical system functions.

  • Is FG-IR-24-472 a known vulnerability?

    Yes, FG-IR-24-472 is a recognized vulnerability that has been disclosed and documented by Fortinet.

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