Nport Ia5150a FirmwareOperating system · Moxa

CVE-2020-27150

HIGH · 7.5 CVSS v3.1 Published 2021-05-14
Fix available
A fix is available. Upgrade to after 1.7 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In multiple versions of NPort IA5000A Series, the result of exporting a device’s configuration contains the passwords of all users on the system and other sensitive data in the original form if “Pre-shared key” doesn’t set.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The NPort IA5000A Series devices export device configuration containing all user passwords and other sensitive data in plaintext when the 'Pre-shared key' is not set. This allows anyone with access to the exported configuration file to retrieve cleartext credentials for all users on the system.

MitigationSet a 'Pre-shared key' on the device before exporting configurations to ensure sensitive data is properly encrypted. Review any previously exported configuration files for exposure.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Nport Ia5150a FirmwareOperating system
Affected:<= 1.4
Nport Ia5250a FirmwareOperating system
Affected:<= 1.4
Nport Ia5450a FirmwareOperating system
Affected:<= 1.7

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify your NPort device model
    Access the device web interface or check the physical device label to confirm the exact model (IA5150A, IA5250A, or IA5450A).
    Affected if The device is one of these three models.
  2. Check the installed firmware version
    Log into the device web interface and navigate to System Settings > Firmware Version, or use the device console and run the firmware version command. Compare against affected versions: IA5150A and IA5250A <= 1.4, IA5450A <= 1.7.
    Affected if Firmware version is at or below the affected thresholds for your model.
  3. Verify if a Pre-shared key is configured
    Log into the device web interface and go to Configuration > Export/Import Settings. Check if a 'Pre-shared key' field is populated. If empty or not set, the vulnerability applies.
    Affected if The Pre-shared key field is empty or not configured.
  4. Locate any exported configuration files
    Search network shares, local filesystems, backup locations, and email attachments for .xml or .cfg files exported from the NPort device. Check file modification dates for recent exports.
    Affected if Exported configuration files exist and were created without a Pre-shared key set.
  5. Inspect exported configuration for plaintext passwords
    Open any found configuration export files in a text editor. Search for password fields or user account entries. If passwords appear in plaintext rather than encrypted format, they are exposed.
    Affected if Passwords in the configuration file are in plaintext (not encrypted/hashed).

You are affected if you have an IA5150A/IA5250A running firmware <=1.4 or IA5450A <=1.7, and you exported a configuration file while the Pre-shared key was unset, resulting in plaintext passwords in the export.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to a release after 1.7
Interim mitigation

Set a 'Pre-shared key' on the device before exporting configurations to ensure sensitive data is properly encrypted. Review any previously exported configuration files for exposure.

Fix this in Nport Ia5150a Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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Scan for this in your stack

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dbcve dependency scanner

Check whether your project pulls in CVE-2020-27150 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-27150 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data