CVE-2023-1261
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 · uneditedMissing MAC layer security in Silicon Labs Wi-SUN SDK v1.5.0 and earlier allows malicious node to route malicious messages through network.
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 confidenceMissing MAC layer security in Silicon Labs Wi-SUN SDK v1.5.0 and earlier allows a malicious node to inject and route forged messages through the Wi-SUN network. This protocol-level weakness in the MAC layer lacks message authentication and integrity verification, enabling an unauthenticated attacker within radio range to disrupt network communications.
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<= 1.5.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.
-
Identify Silicon Labs Wi-SUN SDK usageReview your device firmware documentation, bill of materials, or software components list to confirm whether the Silicon Labs Wi-SUN SDK is integrated into your deployed devices or development environment.Affected if The Silicon Labs Wi-SUN SDK is present in the environment
-
Check Wi-SUN SDK versionLocate the SDK version information in your firmware build files, release notes, or device firmware image metadata. Compare the installed version to the affected range (<= 1.5.0).Affected if The SDK version is 1.5.0 or earlier
-
Verify MAC layer security implementationInspect the Wi-SUN stack configuration files or firmware code for MAC layer security implementation. Look for MACsec, message authentication codes (MAC), or integrity verification mechanisms in the network stack configuration.Affected if MAC layer security features are absent from the configuration or code
-
Check firmware for security updatesReview the firmware changelog or release notes from Silicon Labs for the deployed devices to confirm whether MAC layer security fixes have been incorporated.Affected if No firmware update addressing MAC layer security has been applied
The environment is affected if Silicon Labs Wi-SUN SDK version 1.5.0 or earlier is in use and MAC layer security remains unimplemented in the network configuration.
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 to a patched version of the Silicon Labs Wi-SUN SDK that implements MAC layer security. For deployed devices, apply firmware updates incorporating the security fix and consider network segmentation to limit exposure until remediation.
- Consultation4.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,496.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-1261 — 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-2023-1261 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data