CVE-2023-1262
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 Linux Border Router v1.5.2 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 Linux Border Router v1.5.2 and earlier allows an attacker to inject or route malicious messages through the Wi-SUN mesh network by impersonating a legitimate node, since authentication and encryption are not enforced at the MAC layer.
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<= 1.5.2CVSS 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.
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Identify the Wi-SUN Border Router firmware versionAccess the border router management interface or check the firmware package installed on the Linux system. This is typically found in the router's admin console, system information page, or by running a firmware version query command if available through the management API.Affected if The firmware version is 1.5.2 or earlier.
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Locate the MAC layer security configurationExamine the Wi-SUN Border Router configuration files and management settings. Look for security-related parameters in the border router's web interface or configuration menu, typically under MAC layer, network security, or authentication settings.Affected if MAC layer security settings cannot be found, are absent, or show as disabled/unconfigured.
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Verify MAC authentication statusCheck whether MAC layer authentication is enabled for nodes joining the Wi-SUN mesh network. This is usually indicated in the network security or node authentication configuration section of the border router.Affected if MAC authentication is disabled, not present, or shows as optional/unenforced.
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Confirm MAC encryption enforcementInspect the border router and registered node settings to determine if MAC layer encryption is required for all traffic. Look for encryption mode, cipher settings, or security policy configurations.Affected if MAC encryption is not enforced, is set to optional, or is disabled for the mesh network.
You are affected if your border router runs firmware version 1.5.2 or earlier AND MAC layer authentication and encryption are not enforced in your Wi-SUN 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 dataUpdate to a version where MAC layer security is implemented, and enable/configure MAC authentication and encryption features in the border router and all registered nodes.
- Consultation6.0 h
- Implementation12.0 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-2023-1262 — 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-2023-1262 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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