CVE-2012-1804
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 · uneditedThe OPC server in Progea Movicon before 11.3 allows remote attackers to cause a denial of service (out-of-bounds read and memory corruption) via a crafted HTTP request.
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 confidenceThe OPC server in Progea Movicon before version 11.3 contains an out-of-bounds read vulnerability when processing crafted HTTP requests, leading to memory corruption and denial of service. Attackers can exploit this remotely without authentication by sending specially crafted HTTP requests to the OPC server.
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<= 11.2CVSS 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 Movicon installation versionCheck the installed Progea Movicon version through the application properties, About dialog, or installed programs list in the system control panelAffected if The installed version is 11.2 or earlier (any version up to and including 11.2)
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Confirm OPC server component is in useDetermine if the Movicon OPC server feature is installed and running as part of the Movicon deployment - check for OPC server processes or services related to MoviconAffected if The OPC server component is present and operational in the environment
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Assess network exposure of OPC serverReview network configuration to determine if the OPC server is bound to accessible network interfaces and listening on HTTP ports (typically ports 80, 443, or configured OPC ports)Affected if The OPC server is reachable from untrusted or external network segments
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Check for recent OPC server trafficReview OPC server logs or network logs for unusual or unexpected HTTP request patterns to the OPC server endpointAffected if The OPC server has processed HTTP requests, indicating it is active and potentially exposed
You are affected if Movicon version 11.2 or earlier is installed, the OPC server component is enabled, and the server is network-accessible to handle HTTP requests.
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 Progea Movicon to version 11.3 or later. If immediate upgrade is not feasible, restrict network access to the OPC server by placing it behind a firewall or VPN, limiting exposure to untrusted networks.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2012-1804 — 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-2012-1804 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