CVE-2012-3020
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 Siemens Synco OZW Web Server devices OZW672.*, OZW772.*, and OZW775 with firmware before 4 have an unspecified default password, which makes it easier for remote attackers to obtain administrative access via a network session.
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 confidenceSiemens Synco OZW Web Server devices (OZW672.*, OZW772.*, OZW775) contain an unspecified default administrative password in firmware versions prior to version 4, allowing remote attackers to obtain administrative access via network sessions.
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= ozw672.01= ozw672.04= ozw672.16= ozw772.01= ozw772.04= ozw772.16= ozw772.250= ozw775<= 3.0CVSS 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
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/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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Identify the device modelAccess the web server interface or check the device label/documentation to confirm the model is one of: OZW672.*, OZW772.*, or OZW775Affected if The device model matches ozw672.01, ozw672.04, ozw672.16, ozw772.01, ozw772.04, ozw772.16, ozw772.250, or ozw775
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Check the firmware versionLog into the web interface and navigate to the system information or firmware version page, or use the device's management console to query the firmware versionAffected if The firmware version is 3.0 or lower, or is unknown/cannot be determined and the device model is in the affected list
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Verify the administrative passwordAttempt to log into the web interface using the default administrative credentials. If you do not know the default password, check device documentation or contact Siemens for the default credentialAffected if The default administrative password has not been changed from the factory default, or the default password is still accepted for login
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Check network accessibilityDetermine if the web server interface is accessible from untrusted networks by reviewing firewall rules, NAT configurations, or by attempting to access the device IP from an external networkAffected if The OZW web server interface is directly accessible from the internet or untrusted networks without VPN or IP restrictions
You are affected if you have a Siemens Synco OZW Web Server device with model OZW672.*, OZW772.*, or OZW775 running firmware version 3.0 or lower, and the default administrative password has not been changed.
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 dataUpdate firmware to version 4 or later and immediately change the default administrative password to a strong, unique credential; restrict network access to the web server interface if patching is delayed.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-3020 — 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-2012-3020 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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