How severe is CVE-2019-5139?

CVE-2019-5139 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2019-5139 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5139?

CVE-2019-5139 affects Moxa Awk-3131a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-5139?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-5139 published?

CVE-2019-5139 was published on 2020-02-25 and last updated on 2026-06-17.

CVE-2019-5139

CVE-2019-5139 is a high-severity vulnerability in Moxa Awk-3131a Firmware with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 3.6
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Moxa Awk-3131a Firmware
Published: 2020-02-25
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-5139?: CVE-2019-5139 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2019-5139 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5139?: CVE-2019-5139 affects Moxa Awk-3131a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-5139?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-5139 published?: CVE-2019-5139 was published on 2020-02-25 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0928

Affected products (1)

cpe:2.3:o:moxa:awk-3131a_firmware:1.13:*:*:*:*:*:*:*

More vulnerabilities in Moxa Awk-3131a Firmware

CVE-2017-14459 — Critical (CVSS 10.0): An exploitable OS Command Injection vulnerability exists in the Telnet, SSH, and console login functionality of Moxa…
CVE-2016-8363 — Critical (CVSS 10.0): An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232…
CVE-2019-5138 — Critical (CVSS 9.9): An exploitable command injection vulnerability exists in encrypted diagnostic script functionality of the Moxa…
CVE-2016-8717 — Critical (CVSS 9.8): An exploitable Use of Hard-coded Credentials vulnerability exists in the Moxa AWK-3131A Wireless Access Point running…
CVE-2016-8721 — Critical (CVSS 9.1): An exploitable OS Command Injection vulnerability exists in the web application 'ping' functionality of Moxa AWK-3131A…
CVE-2019-5162 — High (CVSS 8.8): An exploitable improper access control vulnerability exists in the iw_webs account settings functionality of the Moxa…

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