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CVE Record

CVE-2020-27185: Cleartext transmission of sensitive information via Moxa Service in NPort IA5000A series serial devices.

Cleartext transmission of sensitive information via Moxa Service in NPort IA5000A series serial devices. Successfully exploiting the vulnerability could enable attackers to read authentication data, device configuration, and other sensitive data transmitted over Moxa Service.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This issue affects Moxa NPort IA5000A serial device servers when Moxa Service is enabled. Sensitive information can be transmitted in cleartext, allowing an attacker who can observe that traffic to read authentication data, device configuration, and other sensitive details.

Executive priority

Prioritize review in OT environments where these serial device servers bridge industrial systems. The business risk is credential or configuration exposure, not confirmed remote code execution. Urgency rises if management or service traffic crosses shared or remotely accessible networks.

Technical view

CVE-2020-27185 is a cleartext transmission weakness in Moxa Service on NPort IA5000A Series devices. The supplied record lists all versions as affected when Moxa Service is enabled. No CVSS score, CWE, patch details, or technical protocol specifics are included in the provided source bundle.

Likely exposure

Exposure is most likely where NPort IA5000A devices run Moxa Service on networks reachable by untrusted users, shared OT segments, remote access paths, or monitoring points where traffic can be captured.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation evidence. Exploitation impact depends on attacker network visibility to Moxa Service traffic, because the described risk is reading sensitive data transmitted in cleartext.

Researcher notes

Evidence is limited to cleartext exposure of authentication data, configuration, and other sensitive data over Moxa Service. The bundle does not provide CVSS, CWE, packet details, exploit prerequisites beyond traffic visibility, or confirmed fixes. Avoid assuming internet-wide exploitability without environment evidence.

Mitigation direction

  • Review the Moxa advisory for vendor-approved firmware or configuration remediation.
  • Disable Moxa Service where it is not operationally required.
  • Restrict Moxa Service reachability to trusted management hosts and networks.
  • Reduce shared-network exposure for affected serial device servers.
  • Treat captured credentials or configurations as potentially exposed if cleartext traffic was present.

Validation and detection

  • Inventory NPort IA5000A devices and record whether Moxa Service is enabled.
  • Check whether Moxa Service is reachable from untrusted or shared network segments.
  • Review network captures or monitoring for cleartext sensitive Moxa Service data.
  • Confirm remediation status against the latest Moxa advisory.
  • Document any compensating controls for devices that cannot be changed quickly.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-27185 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aNPort IA5000A Series with Moxa Service enabledAll versionsListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.