CVE-2020-27259
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 Omron CX-One Version 4.60 and prior may allow an attacker to supply a pointer to arbitrary memory locations, which may allow an attacker to remotely execute arbitrary code.
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 confidenceThe Omron CX-One Version 4.60 and prior contains a vulnerability that allows an attacker to supply a pointer to arbitrary memory locations. This pointer manipulation can be exploited to achieve remote arbitrary code execution on the affected system.
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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 productsCheck the system for any of these Omron CX software packages: CX-One, CX-Position, CX-Protocol, or CX-Server. Look in Program Files, Program Files (x86), or the system's installed programs list.Affected if Any of these four products are found on the system
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Check CX-One versionLocate the CX-One installation and check its version. Common locations include C:\Program Files\Omron\CX-One or C:\Program Files (x86)\Omron\CX-One. Right-click the executable, select Properties, and view the Details tab for version information.Affected if The installed version is 4.60 or lower
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Check CX-Position versionLocate the CX-Position installation directory, typically under C:\Program Files\Omron\CX-Position or C:\Program Files (x86)\Omron\CX-Position. Check the executable version through Properties > Details.Affected if The installed version is 2.52 or lower
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Check CX-Protocol and CX-Server versionsLocate CX-Protocol (typically under C:\Program Files\Omron\CX-Protocol) and CX-Server (under C:\Program Files\Omron\CX-Server) installations. Check version through Properties > Details for each executable.Affected if CX-Protocol version is 2.02 or lower, OR CX-Server version is 5.0.28 or lower
If any of these four products are installed and their version numbers fall at or below the specified thresholds, the system is vulnerable to CVE-2020-27259.
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 dataUpgrade to a patched version of CX-One beyond 4.60. If immediate patching is not possible, network segmentation and restricting access to the CX-One software can reduce exposure, as the vulnerability is network-exploitable.
- Consultation4.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-27259 — 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-2020-27259 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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