CVE-2020-23639

Name: CVE-2020-23639
Creator: NVD / NIST
Published: 2020-11-02T21:15:26.617+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.13%

Last modified Jun 17, 2026

CVE-2020-23639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A command injection vulnerability exists in Moxa Inc VPort 461 Series Firmware Version 3.4 or lower that could allow a remote attacker to execute arbitrary commands in Moxa's VPort 461 Series Industrial Video Servers.. EPSS estimates a 3.13% chance of exploitation in the next 30 days.

Description

A command injection vulnerability exists in Moxa Inc VPort 461 Series Firmware Version 3.4 or lower that could allow a remote attacker to execute arbitrary commands in Moxa's VPort 461 Series Industrial Video Servers.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.13%

86.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Moxa	Vport 461 Firmware	<= 3.4

References

Timeline

Published: Nov 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23639?

How severe is CVE-2020-23639?

CVE-2020-23639 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.13% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23639?

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-2020-23639?

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

Scan your code now

Source: NVD / NIST