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Security Advisories


TN-5916 Series Privilege Escalation Vulnerability

  • Security Advisory ID: MPSA-221104
  • Version: V1.0
  • Release Date: Nov 25, 2022

The TN-5916 Series contains a flaw that may allow a remote attacker to gain administrative privileges. By editing the cookie’s values, an attacker can change their privilege from a regular user to an administrator and submit it back to the site..

The identified vulnerability types and potential impacts are shown below:

Item Vulnerability Type Impact
1 Cookie Modification Privilege Escalation Vulnerability A remote attacker could gain administrative privileges.

Affected Products:

The affected products and firmware versions are shown below.

Product Series Affected Versions
TN-5916 Series Firmware Version 3.2 or lower.



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

Product Series Solutions
TN-5916 Series Please upgrade to firmware version 3.3 or higher.


We would like to express our appreciation to Rico Pauli from Stadler 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 Nov 25, 2022

Relevant Products

TN-5900 Series ·

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