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Security Advisories


TN-5900 Series Secure Routers Vulnerabilities

  • Security Advisory ID: MPSA-211213
  • Version: V1.0
  • Release Date: Dec 28, 2021
  • Reference:
    • N/A

Multiple product vulnerabilities were identified in Moxa’s TN-5900 Series Secure Routers. In response to this, Moxa has developed related solutions to address these vulnerabilities.

The identified vulnerability types and potential impacts are shown below:

Item Vulnerability Type Impact
1 Firmware has weak algorithm to protect the integrity of the device An attacker could easily modify the firmware and avoid the inspection mechanism.
2 Command injection An attacker could inject malicious code to damage the device.



Affected Products:

The affected products and firmware versions are shown below.

Product Series Affected Versions
TN-5900 Series Firmware Version 3.1 or lower



Moxa has developed appropriate solutions to address the vulnerabilities. The solutions for affected products are shown below.

Product Series Solutions
TN-5900 Series Please contact Moxa Technical Support for a security patch.


We would like to express our appreciation to KoreLogic for reporting the vulnerability, working with us to help enhance the security of our products, and helping us provide a better service to our customers.

Revision History:

1.0 First Release Dec 28, 2021

Relevant Products

TN-5900 Series ·

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