CVE-2020-25153
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 · uneditedThe built-in web service for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower does not require users to have strong passwords.
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 confidenceThe built-in web service for MOXA NPort IAW5000A-I/O devices with firmware version 2.1 or lower does not enforce strong password requirements, allowing users to set weak passwords susceptible to brute-force or dictionary attacks.
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<= 2.1CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify the device modelAccess the device's web interface or check the device label/console to confirm it is a Moxa NPort IAW5000A-I/O series deviceAffected if The device is not a NPort IAW5000A-I/O model
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Check the firmware versionLog into the device web interface and navigate to System Settings or System Info to view the firmware version, or use the device's console/CLI to run the version commandAffected if Firmware version is 2.1 or lower
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Verify the web service is enabledIn the device web interface, go to Network Settings or Communication Settings and check if the built-in HTTP/HTTPS web service is enabledAffected if The web service is exposed and accessible on the network
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Inspect password policy settingsIn the web interface under User Management or Password Settings, examine whether there are password complexity requirements or minimum length policies definedAffected if No strong password requirements are enforced or the password policy allows weak passwords (e.g., short length, no character requirements)
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Test for weak password acceptanceAttempt to set a test account with a weak password (e.g., '123456' or 'password') through the user management interface to see if it is acceptedAffected if The system allows weak passwords to be set without rejection
The environment is affected if the device is a Moxa NPort IAW5000A-I/O with firmware version 2.1 or lower that exposes a web service lacking enforced strong password policies.
Generated from the published advisory. Verify against your own configuration.
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 dataUpdate firmware to a version higher than 2.1 to enforce strong password policies, or implement network access controls to limit exposure of the web service to trusted networks only.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25153 — 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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-25153 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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