CVE-2018-17909
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 · uneditedWhen processing project files in Omron CX-Supervisor Versions 3.4.1.0 and prior, the application fails to check if it is referencing freed memory, which may allow an attacker to execute code under the context 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 confidenceOmron CX-Supervisor Versions 3.4.1.0 and prior contains a use-after-free vulnerability when processing project files. The application fails to properly validate memory references before accessing them, allowing an attacker to potentially execute arbitrary code by manipulating freed memory references through 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<= 3.4.1.0CVSS 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:3.0/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 version of Omron CX-SupervisorOpen the Windows Control Panel, go to Programs and Features, find Omron CX-Supervisor in the list, and note the version shown. Alternatively, right-click the main executable file (typically located in the program installation directory) and select Properties to view the File Version on the Details tab.Affected if The displayed version is 3.4.1.0 or any version lower than 3.4.1.0, indicating the software falls within the affected range.
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Locate the CX-Supervisor installation directoryCheck the default installation path, which is commonly C:\Program Files\Omron\CX-Supervisor or C:\Program Files (x86)\Omron\CX-Supervisor. Verify the presence of the main application executable files.Affected if The software is installed on the system, confirming a potential attack surface exists.
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Verify project file handling capabilityExamine the installation directory for file types associated with CX-Supervisor projects, such as .csp or .supervisor project files. Check if the application is configured to open these files by default or if sample project files exist in the installation folder.Affected if The application processes project files and these files can be loaded or imported, which is the condition required for the vulnerability to be triggered.
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Assess file handling from external sourcesReview whether the system handles project files from untrusted or external sources, such as receiving files via email, downloads, or network shares. Check if there are any recent project files in download folders or common sharing locations.Affected if Users on this system open or import project files from untrusted or unknown sources, which would enable exploitation of the use-after-free vulnerability.
The system is affected if Omron CX-Supervisor version 3.4.1.0 or lower is installed and the application is used to open project files, particularly those from untrusted sources.
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 when available. Until then, implement network segmentation to limit exposure, restrict project file handling to trusted sources only, and consider compensating controls such as application whitelisting.
- 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-2018-17909 — 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-2018-17909 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
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