CVE-2016-5744
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 · uneditedSiemens SIMATIC WinCC 7.0 through SP3 and 7.2 allows remote attackers to read arbitrary WinCC station files via crafted packets.
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 confidenceSiemens SIMATIC WinCC 7.0 through 7.2 contains a path traversal/file disclosure vulnerability where specially crafted network packets can read arbitrary files from the WinCC station, potentially exposing sensitive configuration data, credentials, or system information.
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= 7.0= 7.2CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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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Confirm WinCC installationCheck for Siemens SIMATIC WinCC in the program files directory or Windows registry under HKEY_LOCAL_MACHINE\SOFTWARE\Siemens\WinCCAffected if WinCC software is present on the system
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Identify installed WinCC versionLocate the WinCC version information in the registry at HKEY_LOCAL_MACHINE\SOFTWARE\Siemens\WinCC\Version or within the WinCC installation directory readme fileAffected if Version is 7.0 or 7.2 exactly
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Verify WinCC Runtime is accessible over networkCheck if WinCC Runtime service is listening on TCP ports typically used by WinCC (such as 77 or 80) using netstat or port scanning toolsAffected if WinCC network ports are open and accessible from network locations
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Confirm remote management interfaces are enabledInspect WinCC configuration settings or registry for remote access features such as Web Navigator or远程访问 services that accept network packetsAffected if Remote access or web interfaces are enabled and exposed to network
The system is affected if Siemens SIMATIC WinCC versions 7.0 or 7.2 are installed and the WinCC network services are accessible from the network, allowing specially crafted packets to reach the WinCC station.
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 Siemens security updates/patches for WinCC, implement network segmentation to restrict unauthorized access to SCADA systems, and follow ICS-CERT guidance for industrial control system security.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 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 $11,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-5744 — 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-2016-5744 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