CVE-2018-18993
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 · uneditedTwo stack-based buffer overflow vulnerabilities have been discovered in CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior). When processing project files, the application allows input data to exceed the buffer. An attacker could use a specially crafted project file to overflow the buffer and execute code under the privileges of the application.
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 confidenceStack-based buffer overflow in CX-One, CX-Programmer, and CX-Server when parsing project files. The application fails to validate input size before copying data into fixed-size stack buffers, allowing attackers to overflow the buffer and achieve code execution with application-level privileges via specially crafted project files.
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<= 4.42<= 9.66<= 5.0.23CVSS 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 which Omron product is installedCheck Windows Programs and Features or the application menu for CX-One, CX-Programmer, or CX-ServerAffected if Any of these three products are present on the system
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Check CX-One versionIn Programs and Features, locate CX-One and note the version column, or open CX-One and use Help > About CX-OneAffected if Version displayed is 4.42 or lower
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Check CX-Programmer versionIn Programs and Features, locate CX-Programmer and note the version column, or open CX-Programmer and use Help > About CX-ProgrammerAffected if Version displayed is 9.66 or lower
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Check CX-Server versionIn Programs and Features, locate CX-Server and note the version column, or locate CX-Server DLL files in the installation directory and check their file propertiesAffected if Version displayed is 5.0.23 or lower
The environment is affected if CX-One version 4.42 or lower, CX-Programmer version 9.66 or lower, or CX-Server version 5.0.23 or lower is installed, and the application is used to open project files.
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 CX-One version 4.43 or later, CX-Programmer version 9.67 or later, and CX-Server version 5.0.24 or later. Until patched, avoid opening project files from untrusted sources and consider running the application in a restricted sandbox environment.
- Consultation4.0 h
- Implementation8.0 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-2018-18993 — 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-2018-18993 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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- Version or environment caveats, and links to real fixes
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