CVE-2013-6949
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 Belkin WeMo Home Automation firmware before 3949 does not properly use the STUN and TURN protocols, which allows remote attackers to hijack connections and possibly have unspecified other impact by leveraging access to a single WeMo device.
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 Belkin WeMo Home Automation firmware before version 3949 improperly implements STUN (Session Traversal Utilities for NAT) and TURN (Traversal Using Relays around NAT) protocols used for NAT traversal. This improper implementation allows remote attackers to hijack connections by leveraging access to a single WeMo device on the network.
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= 2769CVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/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 Belkin WeMo device on the networkLocate WeMo devices by checking for devices with manufacturer 'Belkin' or product names containing 'WeMo', 'F7C027', 'F7C029', or similar WeMo model numbers using network scanning tools or checking DHCP lease tablesAffected if Device is a Belkin WeMo Home Automation device
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Determine the firmware versionAccess the WeMo device's web interface (typically at the device's IP address) and navigate to the firmware or device information page, or use the WeMo mobile app to check device firmware versionAffected if Firmware version is lower than 3949 (vulnerable versions include 2769 and earlier versions before 3949)
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Verify STUN/TURN service availabilityCheck if UDP ports 3478 (STUN) and 5349 (TURN) are open and responding on the WeMo device IP using a port scanner like nmap: 'nmap -sU -p 3478,5349 <device_ip>'Affected if STUN/TURN ports are open and accessible, indicating the improperly implemented NAT traversal services are running
You are affected if you have a Belkin WeMo device on your network running firmware version 3949 or lower, with STUN/TURN services 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.
dbcve · scopedUpgrade Belkin WeMo firmware to version 3949 or later to remediate the improper STUN/TURN protocol implementation. If upgrading is not possible, network segment the device and restrict external access.
Firmware version 3949 or later
- Identify the specific Belkin WeMo device model requiring update
- Check the current firmware version through the WeMo app or web interface
- Download firmware version 3949 or later from Belkin's official support website (belkin.com)
- Ensure the WeMo device remains powered on and connected to stable power during the update process
- Apply the firmware update through the WeMo mobile application or web-based management interface
- Verify the firmware has been successfully updated by checking the version number in the device settings
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-6949 — 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-2013-6949 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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