CVE-2014-5426
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 · uneditedMatrikonOPC OPC Server for DNP3 1.2.3 and earlier allows remote attackers to cause a denial of service (unhandled exception and DNP3 process crash) via a crafted message.
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 confidenceMatrikonOPC OPC Server for DNP3 versions 1.2.3 and earlier contains a vulnerability where processing a specially crafted message triggers an unhandled exception, causing the DNP3 process to crash and resulting in denial of service. The vulnerability is remotely exploitable without authentication.
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<= 1.2.3CVSS 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 installed MatrikonOPC DNP3 OPC Server versionOpen the application or check the program files directory for the MatrikonOPC DNP3 OPC Server installation; locate version information in the About or Help section, or check the executable file properties for the version numberAffected if The installed version is 1.2.3 or any earlier version (1.2.3, 1.2.2, 1.2.1, etc.)
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Confirm the DNP3 protocol handler is enabledOpen the MatrikonOPC OPC Server for DNP3 configuration or settings panel; look for DNP3 protocol configuration or channel settings and verify if DNP3 is actively enabledAffected if DNP3 protocol support is enabled and the server is configured to process DNP3 messages
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Verify the DNP3 service is runningOpen Windows Services console (services.msc) or check the MatrikonOPC application status; look for a service related to MatrikonOPC DNP3 or DNP3 Server and confirm it is in a Running stateAffected if The DNP3-related service or process is currently running and accepting connections
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Check network exposure of the OPC serverReview firewall rules, network configuration, or binding settings to determine if the MatrikonOPC DNP3 server is listening on accessible network interfaces; use netstat or the application network settings to identify bound IP addressesAffected if The OPC server is bound to a network interface accessible from untrusted networks or the internet
You are affected if the installed MatrikonOPC DNP3 OPC Server version is 1.2.3 or earlier AND the DNP3 protocol is enabled AND the service is running and network-accessible.
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 vendor-supplied patches when available; in the interim, restrict network access to the OPC server using firewalls or network segmentation to limit exposure to untrusted sources.
- Consultation4.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,392.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-5426 — 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-2014-5426 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data