CVE-2021-0200
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 · uneditedOut-of-bounds write in the firmware for Intel(R) Ethernet 700 Series Controllers before version 8.2 may allow a privileged user to potentially enable an 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 confidenceAn out-of-bounds write vulnerability exists in the firmware of Intel Ethernet 700 Series Controllers versions prior to 8.2. This memory corruption flaw allows a privileged local user to potentially escalate privileges by writing beyond allocated buffer boundaries in the firmware.
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< 8.2< 8.2< 8.2< 8.2< 8.2< 8.2< 8.2< 8.2CVSS 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
- Local
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/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 Intel Ethernet 700 Series Controller hardwareRun 'lspci | grep -i ethernet' or check system network adapter inventory to locate Intel Ethernet Controller models. Look for V710, X710, Xxv710, or Xl710 designations.Affected if The system does not have any of the listed Intel Ethernet 700 Series Controllers (V710, X710, Xxv710, Xl710) - if so, not affected.
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Determine firmware version of the Intel Ethernet 700 Series adapterUse 'ethtool -i <interface>' (replace <interface> with the network interface name, e.g., eth0) to query firmware version. Alternatively, use 'lspci -vv -s <device> | grep -i firmware' or Intel's specific diagnostic tools.Affected if Unable to retrieve firmware version for the Intel Ethernet 700 Series adapter.
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Compare firmware version against vulnerable rangeReview the firmware version output from ethtool or lspci. Check if the version number (before any build identifiers) is less than 8.2 (e.g., 8.0, 7.5, 7.0, etc.).Affected if Firmware version is less than 8.2 (for example: 8.1, 8.0, 7.5, 7.0, etc.) - the system is potentially affected.
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Verify running as privileged local user contextThis is a local privilege escalation flaw. Confirm whether untrusted local users have privileged access to the system where they could trigger the vulnerable code path.Affected if Untrusted local users have privileged access to the system - combined with vulnerable firmware version, they could potentially exploit this flaw.
The system is affected only if it has an Intel Ethernet 700 Series Controller (V710, X710, Xxv710, or Xl710) running firmware version prior to 8.2, and an untrusted local user could interact with the network adapter firmware.
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.
dbcve · scoped8.2
Update Intel Ethernet 700 Series Controllers firmware to version 8.2 or later. Apply updates during a planned maintenance window following vendor firmware deployment procedures.
Intel Ethernet 700 Series Controllers Firmware version 8.2
- Identify the specific Intel Ethernet 700 Series controller model (V710, X710, Xxv710, or Xl710) in your system
- Navigate to Intel's support website or your system vendor's download page to obtain the firmware version 8.2 or later for your specific controller model
- Download the appropriate firmware update package (typically includes .bin or .fd file)
- Follow your system vendor's recommended firmware update procedure - this usually involves using Intel Ethernet Firmware Recovery Tool, EFI utility, or vendor-specific update tool
- Apply the firmware update to the Ethernet controller
- Reboot the system as required by the update process
- Verify the installed firmware version is 8.2 or later using tools like 'ethtool -i' or the vendor's management interface
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-0200 — 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-2021-0200 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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