CVE-2014-2733
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 SINEMA Server before 12 SP1 allows remote attackers to cause a denial of service (web-interface outage) via crafted HTTP requests to port (1) 4999 or (2) 80.
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 SINEMA Server versions before 12 SP1 contain a denial-of-service vulnerability in their web interface. Remote attackers can send crafted HTTP requests to port 4999 or port 80, causing the web interface to become unavailable. This is a classic input validation failure where the server fails to handle malformed requests gracefully.
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<= 12.0CVSS 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
- 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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Confirm Siemens SINEMA Server installationLocate the SINEMA Server installation directory or check installed programs on the system. Typical installation paths may be under C:\Program Files\Siemens or C:\Siemens\SINEMA Server. Verify the executable (often named SinemaServer.exe or similar) exists.Affected if Siemens SINEMA Server is not installed on the system.
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Determine installed SINEMA Server versionRight-click the SINEMA Server executable, select Properties, and check the Version tab. Alternatively, access the web interface and look for a version display in the login or about page, or check the installation logs.Affected if The installed version is 12.0 or earlier (any version <= 12.0). Versions 12 SP1 and later are not affected.
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Verify web interface is enabledCheck if the SINEMA Server web service is running and accessible. Attempt to access http://localhost:4999 or http://localhost:80 in a browser, or check the SINEMA Server configuration for web interface settings.Affected if The web interface is active and responding to HTTP requests on port 4999 or port 80.
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Check network exposure of vulnerable portsReview firewall rules or perform a port scan (e.g., netstat -an | findstr "4999\|80") to determine if ports 4999 and 80 are listening on network interfaces accessible from outside the local machine.Affected if Ports 4999 or 80 are exposed to untrusted network segments or the internet.
The system is affected if Siemens SINEMA Server version 12.0 or earlier is installed with the web interface enabled and accessible, particularly if ports 4999 or 80 are network-exposed.
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 dataUpgrade Siemens SINEMA Server to version 12 SP1 or later to remediate this vulnerability. If immediate patching is not feasible, consider restricting network access to ports 4999 and 80 through firewall rules or access controls.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2733 — 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-2014-2733 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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