CVE-2016-11021
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 · uneditedsetSystemCommand on D-Link DCS-930L devices before 2.12 allows a remote attacker to execute code via an OS command in the SystemCommand parameter.
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 D-Link DCS-930L network camera web interface contains an OS command injection vulnerability in the setSystemCommand function. The SystemCommand parameter is not properly sanitized before being passed to the underlying operating system, allowing a remote authenticated attacker to execute arbitrary OS commands with root privileges.
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< 2.12CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 device model is D-Link DCS-930LAccess the device web interface or check the device label/metadata to verify the exact model numberAffected if The device is not a D-Link DCS-930L model
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Check firmware versionLog into the device web interface and navigate to the system status or firmware information page to view the installed firmware versionAffected if Firmware version is below 2.12 (for example, 2.10, 2.01, or any version less than 2.12)
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Verify web interface is network-accessibleAttempt to access the device IP address on port 80 or 443 from the network segment where the camera is deployedAffected if The web management interface is reachable from untrusted network segments
You are affected if you have a D-Link DCS-930L camera running firmware version earlier than 2.12 with its web interface accessible to your network or the internet
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.
dbcve · scoped2.12
Upgrade the DCS-930L firmware to version 2.12 or later. If patching is not possible, isolate the device on a restricted network segment and disable remote management access from untrusted networks.
Firmware version 2.12 for D-Link DCS-930L
- Download the DCS-930L firmware version 2.12 or later from D-Link's official support website (support.dlink.com)
- Access the DCS-930L web interface by entering the device's IP address in a web browser
- Log in to the device with administrative credentials
- Navigate to the 'System' or 'Maintenance' section of the web interface
- Locate the 'Firmware Upgrade' or 'Update Firmware' option
- Click 'Browse' or 'Choose File' and select the downloaded firmware file (usually a .bin file)
- Click 'Upload' or 'Update' to begin the firmware upgrade process
- Wait for the upload to complete and the device to reboot automatically (do not power off the device during this process)
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-11021 — 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-2016-11021 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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