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Product support

Security Advisories


NPort 5110 Series Vulnerabilities

Multiple vulnerabilities were discovered in the NPort 5110 Series that allow a remote attacker to conduct a denial-of-service attack or overwrite certain values in the memory to cause information to become unavailable.

The identified vulnerability types and potential impacts are shown below:

Item Vulnerability Type Impact
1 Out-of-bounds Write (CWE-787) Certain values in the memory may not be available.
2 Out-of-bounds Write (CWE-787) A vulnerability allows a remote attacker to conduct a denial-of-service attack.

Affected Products:

The affected products and firmware versions are shown below.

Product Series Affected Versions
NPort 5110 Series Only Firmware Version 2.10 is affected.



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

Product Series Solutions
NPort 5110 Series Please contact Moxa Technical Support for assistance.



We would like to express our appreciation to Jens Nielsen from En Garde Security 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 June 10, 2022

Added Reference:

  • ICSRange, Two Moxa Zerodays
  • CISA, ICSA-22-207-04
July 28, 2022
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If you are concerned about a potential cybersecurity vulnerability, please contact us and one of technical support staff will get in touch with you.

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