CVE-2020-12117

Name: CVE-2020-12117
Creator: NVD / NIST
Published: 2020-05-01T14:15:11.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2020-12117 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Moxa Service in Moxa NPort 5150A firmware version 1.5 and earlier allows attackers to obtain sensitive configuration values via a crafted packet to UDP port 4800. NOTE: Moxa Service is an unauthenticated service that runs upon a first-time installation but can be disabled without ill effect.. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

Moxa Service in Moxa NPort 5150A firmware version 1.5 and earlier allows attackers to obtain sensitive configuration values via a crafted packet to UDP port 4800. NOTE: Moxa Service is an unauthenticated service that runs upon a first-time installation but can be disabled without ill effect.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Moxa	Nport 5100a Firmware	<= 1.5

References

https://blog.scadafence.com/technical-blog-cve-2020-12117-industrial-iot-insecure-default-configurationsThird Party Advisory
https://www.moxa.com/en/support/support/security-advisory/nport-5100a-series-serial-device-servers-vulnerabilityPatch, Vendor Advisory
https://blog.scadafence.com/technical-blog-cve-2020-12117-industrial-iot-insecure-default-configurationsThird Party Advisory
https://www.moxa.com/en/support/support/security-advisory/nport-5100a-series-serial-device-servers-vulnerabilityPatch, Vendor Advisory

Timeline

Published: May 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12117?

How severe is CVE-2020-12117?

CVE-2020-12117 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12117?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12117?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST