CVE-2020-27257
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 · uneditedThis vulnerability allows local attackers to execute arbitrary code due to the lack of proper validation of user-supplied data, which can result in a type-confusion condition in the Omron CX-One Version 4.60 and prior devices.
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 · moderate confidenceA type-confusion vulnerability in Omron CX-One Version 4.60 and prior allows local attackers to execute arbitrary code due to lack of proper validation of user-supplied data. The attacker needs local access to the system to exploit this flaw.
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<= 4.60<= 2.52<= 2.02<= 5.0.28CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 installed Omron CX productsScan the system for installed Omron CX-One, CX-Position, CX-Protocol, or CX-Server applications. Check Program Files directories or use system inventory tools to list installed software.Affected if Any of these four Omron products are present on the system
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Check CX-One versionDetermine the installed version of CX-One software (typically via Add/Remove Programs, program directory, or executable version properties). Compare against affected range: version 4.60 and prior.Affected if CX-One version is 4.60 or lower
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Check CX-Position versionDetermine the installed version of CX-Position software. Compare against affected range: version 2.52 and prior.Affected if CX-Position version is 2.52 or lower
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Check CX-Protocol versionDetermine the installed version of CX-Protocol software. Compare against affected range: version 2.02 and prior.Affected if CX-Protocol version is 2.02 or lower
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Check CX-Server versionDetermine the installed version of CX-Server software. Compare against affected range: version 5.0.28 and prior.Affected if CX-Server version is 5.0.28 or lower
If any of the four Omron products are installed with a version at or below the specified thresholds (CX-One <=4.60, CX-Position <=2.52, CX-Protocol <=2.02, CX-Server <=5.0.28), the system is affected by this vulnerability.
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 dataApply the vendor patch or update to a version beyond 4.60 when available; until then, restrict local access to the affected system to trusted personnel only.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,928.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-27257 — 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-2020-27257 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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