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Ethernet Controller E810 FirmwareOperating system · Intel

CVE-2021-0003

MEDIUM · 5.5 CVSS v3.1 Published 2021-08-11
Fix available
A fix is available. Upgrade to 1.4.11 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

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 · unedited
Improper conditions check in some Intel(R) Ethernet Controllers 800 series Linux drivers before version 1.4.11 may allow an authenticated user to potentially enable information disclosure 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 confidence

Improper conditions check in Intel Ethernet Controllers 800 series Linux drivers before version 1.4.11 allows an authenticated local user to potentially enable information disclosure. The vulnerability stems from incorrect conditional logic in the driver that could expose sensitive data to a local attacker with valid credentials.

MitigationUpgrade Intel Ethernet 800 series Linux drivers to version 1.4.11 or later to remediate the improper conditions check vulnerability.

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
Ethernet Controller E810 FirmwareOperating system
Affected:< 1.4.11

CVSS 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
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Intel E800 series Ethernet hardware
    Run 'lspci | grep -i ethernet' or 'ip link show' to list network interfaces, then check if any interface uses Intel E810 controller
    Affected if No Intel E810 Ethernet Controller is present in the system
  2. Check Ethernet firmware version
    Use 'ethtool -i <interface>' to query the firmware version of the Intel E810 interface (e.g., ethtool -i eth0)
    Affected if The firmware version displayed is earlier than 1.4.11 (for example, 1.3.10 or 1.2.5)
  3. Check Linux driver version
    Use 'ethtool -i <interface>' or 'modinfo ice' to retrieve the ice driver version for the Intel E800 series
    Affected if The driver version is earlier than 1.4.11

The system is affected if an Intel Ethernet Controller E810 is present with firmware version OR driver version earlier than 1.4.11, as both must be at version 1.4.11 or later to remediate the improper conditions check flaw.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 1.4.11 or later
Fixed in 1.4.11
Interim mitigation

Upgrade Intel Ethernet 800 series Linux drivers to version 1.4.11 or later to remediate the improper conditions check vulnerability.

Fix this in Ethernet Controller E810 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-0003 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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