CVE-2017-2728
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 · uneditedSome Huawei mobile phones Honor 6X Berlin-L22C636B150 and earlier versions have a Bluetooth unlock bypassing vulnerability. If a user has enabled the smart unlock function, an attacker can impersonate the user's Bluetooth device to unlock the user's mobile phone screen.uawei mobile phones have a Bluetooth unlock bypassing vulnerability due to the lack of validation on Bluetooth devices. If a user has enabled the smart unlock function, an attacker can impersonate the user's Bluetooth device to unlock the user's mobile phone screen.
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 · moderate confidenceThe Honor 6X Berlin-L22C636B150 and earlier versions have a Bluetooth smart unlock bypass vulnerability due to insufficient validation of Bluetooth device identities. An attacker can impersonate a previously paired trusted Bluetooth device (e.g., smartwatch, wireless earbuds) to unlock the phone screen without knowing the PIN/password.
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<= berlin-l22c636b150CVSS 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
- Physical
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:P/AC:H/PR:N/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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Identify the device modelCheck if the device is a Huawei Honor 6X. Go to Settings > About Phone to confirm the model number.Affected if Device is an Honor 6X (Berlin-L22 model)
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Check the firmware versionNavigate to Settings > About Phone > Version to view the build number. Look for the firmware version string.Affected if Firmware version is berlin-l22c636b150 or earlier (any version <= berlin-l22c636b150)
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Verify Bluetooth smart unlock is enabledGo to Settings > Security > Smart Unlock (or Settings > Lock Screen > Smart Unlock depending on Android version). Check if Bluetooth smart unlock toggle is turned ON.Affected if Bluetooth smart unlock feature is enabled in device settings
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Inspect trusted Bluetooth devicesIn the same Smart Unlock settings menu, review the list of trusted Bluetooth devices that are paired. Check if any devices are listed as trusted for screen unlock.Affected if One or more Bluetooth devices are configured as trusted devices for smart unlock
A user is affected if they have an Honor 6X with firmware berlin-l22c636b150 or earlier, and Bluetooth smart unlock is enabled with at least one paired Bluetooth device marked as trusted.
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 dataUsers should disable the smart unlock function until a vendor firmware update is available. Alternatively, users can remove all paired Bluetooth devices from the trusted devices list to prevent exploitation.
- Consultation2.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-2728 — 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-2017-2728 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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