CVE-2016-6540
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 · uneditedUnauthenticated access to the cloud-based service maintained by TrackR Bravo is allowed for querying or sending GPS data for any Trackr device by using the tracker ID number which can be discovered as described in CVE-2016-6539. Updated apps, version 5.1.6 for iOS and 2.2.5 for Android, have been released by the vendor to address the vulnerabilities in CVE-2016-6538, CVE-2016-6539, CVE-2016-6540 and CVE-2016-6541.
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 confidenceThis vulnerability allows unauthenticated access to the TrackR cloud service API. Anyone with a valid TrackR device ID (which can be discovered via CVE-2016-6539) can query or send GPS location data for any TrackR device without proper authentication. This represents a broken authentication control or Insecure Direct Object Reference (IDOR) in the cloud backend API.
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< 2.2.5< 5.1.6CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 your TrackR device firmware versionCheck the firmware version of your TrackR Bravo device through the companion mobile app or device settingsAffected if The firmware version is below 2.2.5 or 5.1.6 (depending on version scheme)
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Identify your mobile app versionCheck the version of the TrackR app installed on your iOS or Android device via the app store or device app settingsAffected if The iOS app version is below 5.1.6 or the Android app version is below 2.2.5
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Verify API authentication behaviorInspect network traffic between the app and TrackR cloud API using a proxy tool; attempt an authenticated request versus an unauthenticated request using a device ID to observe if the server rejects unauthenticated accessAffected if The API accepts requests without valid authentication tokens or allows access to other devices location data using only a device ID
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Check for server-side remediationConfirm that your app is connecting to the current TrackR API endpoints rather than legacy endpoints; the vendor has deployed server-side fixes but older app versions may still use vulnerable API pathsAffected if The app connects to outdated API endpoints that do not enforce proper authentication
You are affected if your TrackR device firmware or mobile app version falls within the vulnerable ranges (Android app < 2.2.5, iOS app < 5.1.6, or firmware < 2.2.5/5.1.6) and the API still permits unauthenticated access.
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 data2.2.55.1.6
Update to the patched app versions: iOS 5.1.6 or Android 2.2.5 or later. The vendor has already deployed server-side fixes; users must update their apps to use the corrected API with proper authentication.
- Consultation3.0 h
- Implementation1.0 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-2016-6540 — 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-2016-6540 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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