dbcve.org
Thunderbolt Dch DriverApplication · Intel

CVE-2021-0110

MEDIUM · 5.5 CVSS v3.1 Published 2021-11-17
Fix available
A fix is available. Upgrade to 1.41.1054.0 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 access control in some Intel(R) Thunderbolt(TM) Windows DCH Drivers before version 1.41.1054.0 may allow unauthenticated user to potentially enable denial of service 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 · high confidence

Improper access control in Intel Thunderbolt Windows DCH drivers before version 1.41.1054.0 allows an unauthenticated local user to potentially cause a denial of service by exploiting insufficient validation of access permissions in the driver.

MitigationUpdate Intel Thunderbolt Windows DCH Drivers to version 1.41.1054.0 or later to remediate the improper access control 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
Thunderbolt Dch DriverApplication
Affected:< 1.41.1054.0

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
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/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 if Intel Thunderbolt software is installed
    Open Windows Control Panel > Programs and Features, or use PowerShell: Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like '*Thunderbolt*'}. Alternatively, open Intel Thunderbolt Software (if installed) and check for its presence.
    Affected if No Intel Thunderbolt software found means not affected by this CVE
  2. Locate the Thunderbolt driver in Device Manager
    Open Device Manager (devmgmt.msc), expand 'System devices' category, look for devices named 'Intel(R) Thunderbolt' or similar Thunderbolt controller entries.
    Affected if No Thunderbolt device entry exists means not affected
  3. Check the installed driver version number
    In Device Manager, right-click the Intel Thunderbolt device, select Properties > Driver tab, note the Driver Version field. Compare this numeric version against 1.41.1054.0. Alternatively, open Intel Thunderbolt Software UI and check Help > About for the version number.
    Affected if Driver version is less than 1.41.1054.0 (for example, 1.41.1053.0 or any earlier version)
  4. Verify the driver is actively running
    In Device Manager, check that the Thunderbolt device shows status 'This device is working properly' without errors. Also verify in Services (services.msc) that Intel Thunderbolt services are running.
    Affected if Driver is installed, running, and version is below 1.41.1054.0

Your environment is affected if the Intel Thunderbolt Windows DCH driver is installed with a version lower than 1.41.1054.0.

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 1.41.1054.0 or later
Fixed in 1.41.1054.0
Interim mitigation

Update Intel Thunderbolt Windows DCH Drivers to version 1.41.1054.0 or later to remediate the improper access control vulnerability.

Recommended fix High confidence

1.41.1054.0 or later

  1. Identify the current Intel Thunderbolt DCH Driver version installed on the system via Device Manager (right-click on Thunderbolt device > Properties > Driver tab)
  2. Visit the Intel Support website or search for Intel Thunderbolt DCH Driver updates
  3. Download the Intel Thunderbolt DCH Driver version 1.41.1054.0 or later for your specific Windows version
  4. Disconnect any Thunderbolt devices from the system before installation
  5. Run the downloaded installer and follow the on-screen prompts to install the updated driver
  6. Restart the system when prompted to complete the installation
  7. Verify the installed driver version matches or exceeds 1.41.1054.0 via Device Manager
Caveat Driver updates generally have low risk but may require reconfiguration of Thunderbolt security settings; test in non-production environment first if possible

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

Fix this in Thunderbolt Dch Driver Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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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-2021-0110 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