As of June 15, 2022, this site no longer supports Internet Explorer. Please use another browser for the best experience on our site.

Product support

Security Advisories


MGate MB3180/MB3280/MB3480 Series Protocol Gateways Vulnerability

  • Security Advisory ID: MPSA-211207
  • Version: V1.0
  • Release Date: Dec 23, 2021
  • Reference:
    • CVE-2021-4161,

A product vulnerability was identified in Moxa’s MGate MB3180/MB3280/MB3480 Series. In response to this, Moxa has developed related solutions to address this vulnerability.

The identified vulnerability types and potential impacts are shown below:

Item Vulnerability Type Impact
1 Cleartext Transmission of Sensitive Information (CWE-319), CVE-2021-4161 Remote attackers can obtain sensitive information.

Affected Products:

The affected products and firmware versions are shown below.

Product Series Affected Versions
MGate MB3180 Series Firmware Version 2.2 or lower
MGate MB3280 Series Firmware Version 4.1 or lower
MGate MB3480 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
MGate MB3180/3280/3480 Series To mitigate this issue, please enable ‘HTTPS’ and disable the HTTP console function under ‘Console Settings’.
We also recommend users refer to 'Tech Note: Moxa Security Hardening Guide for MGate MB3000 Series'.(Download Link)


We would like to express our appreciation to Parul Sindhwad, Anurag M. Chevendra, and Dr. Faruk Kazi from CoE-CNDS Lab, VJTI in Mumbai, India., 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 23, 2021

Relevant Products

MGate MB3180/MB3280/MB3480 Series ·

  •   Print this page
  • You can manage and share your saved list in My Moxa
Let’s get that fixed

If you are concerned about a potential cybersecurity vulnerability, please contact us and one of technical support staff will get in touch with you.

Report a Vulnerability
Added To Bag
You have some items waiting in your bag; click here to finish your quote!