CVE-2018-25112
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 · uneditedAn unauthenticated remote attacker may use an uncontrolled resource consumption in the IEC 61131 program of the affected products by creating large amounts of network traffic that needs to be handled by the ILC. This results in a Denial-of-Service of the device.
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 · high confidenceUnauthenticated remote attackers can exhaust device resources by sending large amounts of network traffic to the IEC 61131 program running on affected Industrial Logic Controllers (ILCs). The ILC cannot handle the traffic volume, leading to uncontrolled resource consumption and complete denial-of-service of the device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 Industrial Logic Controllers in the environmentReview asset inventories, network scans, or consult OT/ICS teams to enumerate all ILC devices. Look for vendors known to produce IEC 61131-compliant controllers.Affected if Any ILC device is present and network-accessible without segmentation.
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Verify the IEC 61131 program is running on the deviceAccess the ILC management interface or PLC programming software and confirm an IEC 61131 logic program is loaded and actively executing on the controller.Affected if An IEC 61131 program is actively running on a network-connected ILC.
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Check ILC device resource utilizationMonitor the ILC for unusual CPU, memory, or network buffer consumption. Use the device's web interface, SNMP, or management console to observe current load levels.Affected if Resource exhaustion is observed or the device becomes unresponsive under high network traffic.
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Verify network exposure of the ILCScan the network to confirm whether the ILC is directly accessible from untrusted networks (e.g., the internet, IT networks) or if firewall/segmentation controls are in place.Affected if The ILC is reachable from untrusted network segments without protective filtering.
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Review traffic patterns reaching the ILCInspect network logs, firewalls, or IDS/IPS appliances positioned before the ILC for signs of abnormally high traffic volume or rate anomalies directed at the device.Affected if Excessive or unusually high-rate traffic is being directed at the ILC.
An organization is affected if they have any network-accessible Industrial Logic Controllers running IEC 61131 programs that lack rate-limiting or traffic filtering protections.
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 dataImplement network segmentation and firewall rules to restrict traffic to the ILC device, and/or deploy rate-limiting at the network perimeter to filter excessive traffic before reaching the affected device.
- Consultation4.0 h
- Implementation8.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-25112 — 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-2018-25112 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
- No spam, self-promotion, credentials, or personal data