CVE-2023-5310
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 · uneditedA denial of service vulnerability exists in all Silicon Labs Z-Wave controller and endpoint devices running Z-Wave SDK v7.20.3 (Gecko SDK v4.3.3) and earlier. This attack can be carried out only by devices on the network sending a stream of packets to the 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 · moderate confidenceA denial of service vulnerability in Silicon Labs Z-Wave devices running SDK v7.20.3 and earlier allows attacker devices on the network to cause device failure by sending a stream of packets. The vulnerability affects both controllers and endpoint devices.
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<= 7.20.2.0CVSS 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 Z-Wave devices and SDK versionsInventory all Z-Wave devices in your environment and retrieve their firmware or SDK version numbers. Consult device documentation or management interfaces for version information.Affected if Any device runs Z-Wave SDK version 7.20.2.0 or earlier (versions 7.20.3 and earlier are affected)
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Determine device role in Z-Wave networkCheck whether each Z-Wave device operates as a controller or an endpoint device. Both controller and endpoint device types are vulnerable according to the CVE.Affected if Device is either a Z-Wave controller or an endpoint device running affected SDK version
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Assess Z-Wave network exposureEvaluate whether the Z-Wave network has appropriate isolation from untrusted devices. Determine if any non-privileged or unknown devices could join the Z-Wave network and send packet streams.Affected if Untrusted or attacker-controlled Z-Wave devices can communicate with affected devices on the same network
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Check for DoS symptomsMonitor Z-Wave devices for signs of unexpected resets, unresponsive behavior, or failure conditions that could indicate exploitation of this vulnerability.Affected if Devices exhibit denial of service symptoms with no other identified cause
You are affected if any Z-Wave device in your environment runs SDK version 7.20.2.0 or earlier and is connected to a Z-Wave network where untrusted devices can send packet streams to it.
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 affected devices to a patched Z-Wave SDK version once available, and implement network segmentation to limit exposure to untrusted Z-Wave devices.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-5310 — 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-2023-5310 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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