CVE-2018-13814
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 · uneditedA vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V14), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V14), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V14), SIMATIC WinCC Runtime Advanced (All versions < V14), SIMATIC WinCC Runtime Professional (All versions < V14), SIMATIC WinCC (TIA Portal) (All versions < V14), SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions). The integrated web server (port 80/tcp and port 443/tcp) of the affected devices could allow an attacker to inject HTTP headers. An attacker must trick a valid user who is authenticated to the device into clicking on a malicious link to exploit the vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.
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 integrated web server in SIMATIC HMI Comfort Panels, WinCC Runtime, and related products (all versions < V14) contains an HTTP header injection vulnerability on ports 80/tcp and 443/tcp. An authenticated user must be tricked into clicking a malicious link to exploit this vulnerability, allowing an attacker to inject arbitrary HTTP headers.
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< 14.0< 14.0< 14.0< 14.0< 14.0< 14.0< 14.0< 14.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/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 the installed SIMATIC HMI device model or WinCC softwareCheck the device nameplate, firmware metadata, or WinCC installation information to confirm it is one of the following: Simatic HMI Comfort Panels, Simatic HMI Comfort Outdoor Panels, Simatic HMI Ktp Mobile Panels (Ktp400f, Ktp700, Ktp700f, Ktp900, Ktp900f), or WinCC (TIA Portal).Affected if The device or software is NOT one of these listed product families.
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Determine the firmware or software versionAccess the device system information, HMI control panel, or WinCC about screen to retrieve the installed version number.Affected if The version is 14.0 or higher. If the version cannot be determined or is below 14.0, the system may be affected.
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Verify the integrated web server is enabledCheck the device or WinCC configuration to determine if the web server feature is activated and listening on ports 80/tcp (HTTP) or 443/tcp (HTTPS).Affected if The web server is not enabled on ports 80/443. The vulnerability only applies when the web server is active.
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Confirm network accessibility of the web serverAttempt to reach the device web interface via HTTP on port 80 or HTTPS on port 443 from an authorized network location.Affected if The web server ports are not reachable from your network segment. However, note that the vulnerability could still be exploited if an authenticated user can access these ports.
You are affected if you have any of the listed SIMATIC HMI products or WinCC versions below V14.0 with the integrated web server enabled and accessible on ports 80/443.
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 data14.0
Upgrade affected SIMATIC HMI devices and WinCC installations to version V14 or later to resolve the header injection vulnerability.
- Consultation6.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,144.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-13814 — 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-2018-13814 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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