Is CVE-2019-5140 actively exploited?

No active exploitation of CVE-2019-5140 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5140 be exploited remotely?

Yes. CVE-2019-5140 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5140?

CVE-2019-5140 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2019-5140

CWE-78Published: February 25, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

An exploitable command injection vulnerability exists in the iwwebs functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted diagnostic script file name can cause user input to be reflected in a subsequent iwsystem call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2019-5140 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.