CVE-2019-5139Public exploit

Diagnostic script execution via embedded decryption password

Published Feb 25, 2020 · Updated Aug 4, 2024

Hard-coded credentials in Moxa AWK-3131A Series firmware 1.13 and earlier allow local users to run custom diagnostic scripts. The iw_webs utility decrypts uploaded scripts with an embedded AES password and passes the plaintext to the device command runner. Local troubleshooting-portal access is required; the documented consequence is extraction of confidential device information without reported service disruption.

CVSS severity6.2
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in Moxa AWK-3131A Series firmware 1.13 and earlier allow local users to run custom diagnostic scripts. The iw_webs utility decrypts uploaded scripts with an embedded AES password and passes the plaintext to the device command runner. Local troubleshooting-portal access is required; the documented consequence is extraction of confidential device information without reported service disruption.

The record

CVE
CVE-2019-5139
Published
Feb 25, 2020
Updated
Aug 4, 2024
Vendor
Moxa
Product
AWK-3131A Series
Classifications
CWE-798, T1059
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Moxa AWK-3131A Firmware version 1.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Moxa · AWK-3131A Seriesversion=Moxa AWK-3131A Firmware version 1.13

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.2Cisco TalosCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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