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Ideapad 1 14iau7 FirmwareOperating system · Lenovo

CVE-2022-3744

MEDIUM · 6.7 CVSS v3.1 Published 2023-08-23
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
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
A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with elevated privileges to unlock UEFI variables due to a hard-coded SMI handler credential.

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

A hard-coded credential in the System Management Interrupt (SMI) handler within LCFC BIOS firmware for certain Lenovo consumer notebooks allows a local attacker with elevated privileges to bypass security controls and unlock UEFI variables, potentially modifying firmware-level settings.

MitigationApply the vendor-provided BIOS/firmware update from Lenovo to remove the hard-coded SMI handler credential. Restrict physical and local access to affected systems as a compensating control until the patch is deployed.

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
Ideapad 1 14iau7 FirmwareOperating system
Affected:< jkcn34ww
Ideapad 1 14igl7 FirmwareOperating system
Affected:< kkcn15ww
Ideapad 1 15iau7 FirmwareOperating system
Affected:< jkcn34ww
Ideapad 1 15igl7 FirmwareOperating system
Affected:< kkcn15ww
Ideapad 1 14ijl7 FirmwareOperating system
Affected:< htcn31ww
Ideapad 1 15ijl7 FirmwareOperating system
Affected:< htcn31ww
Ideapad 3 14iau7 FirmwareOperating system
Affected:< jkcn34ww
Ideapad 3 15iau7 FirmwareOperating system
Affected:< jkcn34ww

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
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 checks

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

  1. Identify the exact notebook model number
    Check the system model using 'systeminfo' on Windows or 'dmidecode -s system-product-name' on Linux, or visually inspect the chassis for the full model designation (e.g., Ideapad 1 14iau7)
    Affected if The model is not one of the eight listed affected Ideapad models (1 14iau7, 1 14igl7, 1 15iau7, 1 15igl7, 1 14ijl7, 1 15ijl7, 3 14iau7, 3 15iau7)
  2. Determine the current BIOS firmware version
    Run 'wmic bios get smbiosbiosversion' on Windows, 'dmidecode -s bios-version' on Linux, or access the BIOS setup menu (press F2 at boot) to view the BIOS version
    Affected if Unable to retrieve a BIOS version string from the system
  3. Compare installed version against affected ranges
    Match your model to its version threshold: Ideapad 1 14iau7/15iau7 and Ideapad 3 14iau7/15iau7 are affected below jkcn34ww; Ideapad 1 14igl7/15igl7 below kkcn15ww; Ideapad 1 14ijl7/15ijl7 below htcn31ww
    Affected if The installed BIOS version is lower than the threshold for your specific model (e.g., jkcn34ww for 14iau7)
  4. Verify the BIOS vendor is LCFC
    Check the BIOS vendor information using 'wmic bios get manufacturer' on Windows or 'dmidecode -s bios-vendor' on Linux; LCFC (Lenovo Capital Factory Inc.) is the OEM for these consumer notebooks
    Affected if The BIOS vendor is not LCFC or the system uses a different BIOS supplier

A system is affected if it is one of the eight listed Ideapad models with a BIOS version lower than the specified threshold for that model, and the BIOS is manufactured by LCFC.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor-provided BIOS/firmware update from Lenovo to remove the hard-coded SMI handler credential. Restrict physical and local access to affected systems as a compensating control until the patch is deployed.

Recommended fix High confidence

jkcn34ww (for 14iau7/15iau7/3 models) | kkcn15ww (for 14igl7/15igl7) | htcn31ww (for 14ijl7/15ijl7)

  1. 1. Identify the exact model number of the Lenovo Ideapad laptop (e.g., Ideapad 1 14iau7, Ideapad 3 15iau7, etc.)
  2. 2. Determine the current BIOS/firmware version installed on the system via BIOS setup or Lenovo Vantage software
  3. 3. Navigate to the Lenovo support website (support.lenovo.com) and enter the product model number
  4. 4. Locate the BIOS/firmware update section and download the latest version that addresses CVE-2022-3744
  5. 5. For Ideapad 1 14iau7/15iau7 and Ideapad 3 models: download version jkcn34ww or later
  6. 6. For Ideapad 1 14igl7/15igl7: download version kkcn15ww or later
  7. 7. For Ideapad 1 14ijl7/15ijl7: download version htcn31ww or later
  8. 8. Run the BIOS update utility with administrator privileges and ensure the laptop is connected to AC power
Caveat BIOS updates carry inherent risk; power interruption during flashing can render the device unusable; backup important data before proceeding

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

Fix this in Ideapad 1 14iau7 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation4.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,840
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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-2022-3744 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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