CVE-2019-17518
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 Bluetooth Low Energy implementation on Dialog Semiconductor SDK through 1.0.14.1081 for DA1468x devices responds to link layer packets with a payload length larger than expected, allowing attackers in radio range to cause a buffer overflow via a crafted packet. This affects, for example, August Smart Lock.
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 confidenceDialog Semiconductor's BLE SDK for DA1468x devices fails to validate payload length in incoming link layer packets, allowing a remote attacker within radio range to send specially crafted packets with oversized payloads that overflow a buffer during the response handling.
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<= 1.0.14.1081CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 DA1468x BLE hardware in useDetermine whether your device or product utilizes Dialog Semiconductor's DA1468x series Bluetooth Low Energy chipset. This may be documented in hardware specifications, schematics, or Bill of Materials (BOM).Affected if The device uses DA14680, DA14681, DA14682, DA14683, DA14684, DA14685, DA14686, DA14687, or DA14688 BLE chipsets
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Determine the Dialog BLE SDK versionLocate the Dialog Semiconductor Software Development Kit version used to compile your device firmware. Check build documentation, version control history, or SDK installation directory for a version identifier. SDK version is typically found in SDK release notes or the installed SDK folder name.Affected if SDK version is 1.0.14.1081 or any earlier version (versions <= 1.0.14.1081)
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Verify BLE link layer is enabledConfirm that Bluetooth Low Energy functionality is actively used on the device. The vulnerability exists in incoming link layer packet handling, so any device with BLE advertising, scanning, or connection capabilities is processing these packets.Affected if BLE feature is enabled and the device accepts incoming BLE connections or advertises
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Compare firmware version against affected rangeRetrieve the compiled firmware version running on your DA1468x device. This may be accessible via firmware metadata, bootloader information, or by querying the device if debug access is available.Affected if The firmware was built using SDK version 1.0.14.1081 or earlier and contains the unpatched link layer handling code
You are affected if your DA1468x-based device uses firmware built with the Dialog Semiconductor BLE SDK at version 1.0.14.1081 or earlier, where BLE link layer processing is active.
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 dataUpdate to a patched version of the Dialog Semiconductor SDK (beyond 1.0.14.1081) and deploy recompiled firmware to affected devices. If no update is available, consider network segmentation to limit BLE radio range exposure.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-17518 — 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-2019-17518 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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