CVE-2013-3612
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 · uneditedDahua DVR appliances have a hardcoded password for (1) the root account and (2) an unspecified "backdoor" account, which makes it easier for remote attackers to obtain administrative access via authorization requests involving (a) ActiveX, (b) a standalone client, or (c) unknown other vectors.
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 confidenceDahua DVR (Digital Video Recorder) appliances contain hardcoded credentials for the root account and an undocumented backdoor account. These static credentials are embedded in the firmware and allow remote attackers to gain full administrative access through ActiveX controls, standalone client software, or other authentication vectors.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/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 the DVR device modelAccess the DVR system information page through the device UI, or query the device via its web interface, telnet, or manufacturer discovery tool. Look for the exact model name in the system settings or device label.Affected if The model matches Dvr0404hd A/L/S/U or Dvr0404hf A E/Al E/S E/U E (or variants thereof) from Dahua Security.
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Confirm firmware versionCheck the firmware version in the DVR system settings under 'Information' or 'System Info', or query the device via its management interface. Record the exact firmware version string.Affected if Any firmware version is present on one of the affected models, since the advisory states all versions are affected.
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Check for undocumented backdoor accountAccess the user management or account settings in the DVR admin panel. Review the list of enabled accounts for any unknown or undocumented accounts beyond the standard administrative users.Affected if An undocumented account (in addition to the documented root or admin accounts) is present or was previously configured on the device.
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Assess network exposure of the DVRReview network configuration on the DVR device. Determine if management ports (HTTP/HTTPS, telnet, RTSP, or vendor-specific ports) are reachable from untrusted networks or the public internet.Affected if The DVR management interfaces are accessible from networks outside the trusted internal segment, enabling remote exploitation of the hardcoded credentials.
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Inspect for remote access configurationReview the DVR settings for remote access features such as 'Cloud', 'P2P', 'DDNS', or vendor remote viewing services. Check if any port forwarding or firewall rules expose the device externally.Affected if Remote access features are enabled or port forwarding is configured, increasing the likelihood of remote exploitation of the static credentials.
A defender is affected if they operate any Dvr0404hd or Dvr0404hf series Dahua DVR device, regardless of firmware version, and that device is network accessible.
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 dataImmediately isolate affected DVR devices on restricted network segments, change credentials if functionality exists, monitor for unauthorized access, and apply vendor firmware updates when available. If no update exists, consider device replacement.
- Consultation6.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-3612 — 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-2013-3612 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