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Ax210 FirmwareOperating system · Intel

CVE-2021-0063

MEDIUM · 6.5 CVSS v3.1 Published 2021-11-17
Fix available
A fix is available. Upgrade to 22.40 or later.
See remediation →
70/100
Remediation priority · Elevated
No privileges 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 input validation in firmware for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi in Windows 10 may allow an unauthenticated user to potentially enable denial of service via adjacent 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 · high confidence

Improper input validation in the firmware of Intel PROSet/Wireless WiFi and Killer WiFi adapters for Windows 10 allows an unauthenticated attacker within wireless range to send specially crafted input that can trigger a denial of service condition, potentially causing the WiFi service to fail or become unresponsive.

MitigationApply the vendor-supplied firmware/driver update from Intel or the system manufacturer to patch the input validation vulnerability in the WiFi 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
Ax210 FirmwareOperating system
Affected:< 22.40
Ax201 FirmwareOperating system
Affected:< 22.40
Ax200 FirmwareOperating system
Affected:< 22.40
Ac 9560 FirmwareOperating system
Affected:< 22.40
Ac 9462 FirmwareOperating system
Affected:< 22.40
Ac 9461 FirmwareOperating system
Affected:< 22.40
Ac 9260 FirmwareOperating system
Affected:< 22.40
Ac 8265 FirmwareOperating system
Affected:< 22.40

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

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

  1. Identify the installed WiFi adapter model
    Open Device Manager, expand Network adapters, and look for Intel PROSet/Wireless or Killer WiFi adapters. Note the exact model name (e.g., Intel Wi-Fi 6 AX201, Intel Wireless 8265, etc.).
    Affected if The adapter model matches one of the affected products: Ax210, Ax201, Ax200, AC 9560, AC 9462, AC 9461, AC 9260, or AC 8265.
  2. Check the WiFi firmware version
    In Device Manager, right-click the Intel WiFi adapter, select Properties, go to the Driver or Firmware tab, and locate the Firmware Version field. Alternatively, open Intel PROSet/Wireless software and navigate to the adapter details to view the firmware version.
    Affected if The displayed firmware version is below 22.40 (e.g., 22.30, 21.10, etc.).
  3. Confirm version comparison method
    If firmware version is displayed in a different format (e.g., 22.40.0.5 or 22.3.0), compare the major.minor components against 22.40. Any version where the numeric value is less than 22.40 is affected.
    Affected if The numeric firmware version is lower than 22.40.

A user is affected if their system uses one of the listed Intel WiFi adapters AND the installed firmware version is below 22.40.

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.

dbcve · scoped
Upgrade available Upgrade to 22.40 or later
Fixed in 22.40
Interim mitigation

Apply the vendor-supplied firmware/driver update from Intel or the system manufacturer to patch the input validation vulnerability in the WiFi firmware.

Recommended fix High confidence

Intel WiFi firmware version 22.40 or later

  1. Obtain the Intel WiFi firmware version 22.40 or later from Intel's official support website (www.intel.com) for your specific adapter model (Ax210, Ax201, Ax200, AC 9560, AC 9462, AC 9461, AC 9260, or AC 8265)
  2. Download the appropriate Intel PROSet/Wireless WiFi and Killer WiFi driver package for Windows 10
  3. Run the Intel Driver & Support Assistant or use the downloaded installer to update the wireless adapter firmware
  4. Reboot the system after the firmware update completes to ensure the new firmware is properly loaded
  5. Verify the firmware version has been updated to 22.40 or later via Device Manager or Intel PROSet utility
Caveat Firmware updates may require compatible Intel PROSet/driver versions; ensure system meets Windows 10 requirements and backup current configuration before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ax210 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
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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-2021-0063 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