CVE-2023-6533
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 · uneditedMalformed Device Reset Locally Command Class packets can be sent to the controller, causing the controller to assume the end device has left the network. After this, frames sent by the end device will not be acknowledged by the controller. This vulnerability exists in PC Controller v5.54.0, and earlier.
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 confidenceMalformed Device Reset Locally Command Class packets can be sent to the PC Controller, causing it to incorrectly believe an end device has left the network. Once this occurs, the controller will no longer acknowledge frames from that end device, effectively rendering the device unreachable.
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<= 5.54CVSS 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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Confirm the Z-Wave controller productIdentify if the system uses a Silicon Labs (Silabs) Z-Wave PC Based Controller. This is typically a software controller or a USB dongle used to manage a Z-Wave network.Affected if The product is a Silabs Z-Wave PC Based Controller
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Check the installed controller versionAccess the controller software or documentation to determine the firmware/software version. This is usually shown in the controller UI, firmware settings, or dongle specifications.Affected if The version is 5.54 or lower (any version <= 5.54)
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Review Z-Wave network for unreachable devicesCheck the controller's device list or network map for any end devices that appear offline, removed, or unreachable. Compare against known legitimate device removals.Affected if There are end devices that show as unreachable or have been removed from the network without user action
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Inspect network traffic for Device Reset Locally packetsMonitor Z-Wave network traffic or review controller logs for Device Reset Locally Command Class packets, especially from end devices that became unreachable.Affected if Device Reset Locally Command Class packets are observed from devices that subsequently became unreachable
A user is affected if they run a Silabs Z-Wave PC Based Controller at version 5.54 or lower and have observed end devices becoming unexpectedly unreachable in the Z-Wave network.
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 dataUpgrade PC Controller to a version newer than v5.54.0 that properly validates Device Reset Locally Command Class packets before processing them. If no upgrade is available, network segmentation may provide partial risk reduction.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-6533 — 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-2023-6533 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
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