CVE-2021-0055
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 · uneditedInsecure inherited permissions for some Intel(R) NUC 9 Extreme Laptop Kit LAN Drivers before version 10.42 may allow an authenticated user to potentially enable escalation of privilege via local access.
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 confidenceThe Intel NUC 9 Extreme Laptop Kit LAN drivers before version 10.42 contain insecure inherited permissions that allow an authenticated local user to escalate privileges. This is a privilege escalation vulnerability where improper permission inheritance in the driver allows a standard user to gain elevated access.
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< 10.42< 10.42< 10.42< 10.42CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 the Intel NUC 9 Extreme Laptop Kit firmware versionRun `dmidecode -s bios-version` on Linux or check System Information > BIOS Version on Windows. Alternatively, use Intel's NUC firmware update utility or check the BIOS setup screen on boot.Affected if The firmware version shown is earlier than 10.42 (for any of the Lapqc71a, b, c, or d variants)
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Verify the specific LAN driver firmware componentCheck the LAN/Ethernet adapter firmware version through the device manager on Windows or `ethtool -i` on Linux, or access Intel NUC firmware update tools to list installed firmware components.Affected if The LAN driver firmware version is listed and is below 10.42
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Confirm the system modelRun `dmidecode -s system-product-name` on Linux or check System Information > System Model on Windows to confirm this is an Intel NUC 9 Extreme Laptop Kit.Affected if The system is an Intel NUC 9 Extreme Laptop Kit (Lapqc71a/b/c/d) and the firmware is below 10.42
You are affected if your Intel NUC 9 Extreme Laptop Kit runs firmware version earlier than 10.42 for any of the Lapqc71a, Lapqc71b, Lapqc71c, or Lapqc71d variants.
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 data10.42
Update Intel NUC 9 Extreme Laptop Kit LAN drivers to version 10.42 or later to resolve the insecure permission inheritance issue.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-0055 — 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-2021-0055 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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- Version or environment caveats, and links to real fixes
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