What is CVE-2019-5139?

CVE-2019-5139 is a high-severity vulnerability in Moxa Awk-3131a, classified under Use of Hard-coded Credentials. CVSS score: 7.1/10. Published 2020-02-25.

How severe is CVE-2019-5139?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Moxa Awk-3131a

CVE-2019-5139

An exploitable use of hard-coded credentials vulnerability exists in multiple iw_* utilities of the Moxa AWK-3131A firmware version 1.13. The device operating system contains an undocumented encryption password, allowing for the creation of custom diagnostic scripts.

Published 2020-02-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Moxa Awk-3131a
Moxa Awk-3131a Firmware — versions 1.13
Moxa — versions Moxa AWK-3131A Firmware version 1.13

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

talosintelligence.com/vulnerability_reports/TALOS-2019-0928 (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-5139?: CVE-2019-5139 is a high-severity vulnerability in Moxa Awk-3131a, classified under Use of Hard-coded Credentials. CVSS score: 7.1/10. Published 2020-02-25.
How severe is CVE-2019-5139?: High severity. CVSS v3 base score is 7.1 out of 10.