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Chengming 3900 FirmwareOperating system · Dell

CVE-2022-31225

MEDIUM · 5.1 CVSS v3.1 Published 2022-09-12
Fix available
A fix is available. Upgrade to 1.1.0 / 1.1.66 or later.
See remediation →
53/100
Remediation priority · Moderate
Zero-click Patch available

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
Dell BIOS versions contain an Unchecked Return Value vulnerability. A local authenticated administrator user could potentially exploit this vulnerability in order to change the state of the system or cause unexpected failures.

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

A detailed technical summary for this CVE is being prepared.

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
Chengming 3900 FirmwareOperating system
Affected:< 1.1.66
Inspiron 14 Plus 7420 FirmwareOperating system
Affected:< 1.2.0
Inspiron 16 Plus 7620 FirmwareOperating system
Affected:< 1.2.0
Inspiron 3910 FirmwareOperating system
Affected:< 1.1.66
Inspiron 5320 FirmwareOperating system
Affected:< 1.1.0
Inspiron 5420 FirmwareOperating system
Affected:< 1.4.1
Inspiron 5620 FirmwareOperating system
Affected:< 1.4.1
Inspiron 7420 FirmwareOperating system
Affected:< 1.3.0

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
High
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

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

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 1.1.0 / 1.1.66 / 1.2.0 or later
Fixed in 1.1.01.1.661.2.0
Vendor patch www.dell.com →
Recommended fix High confidence

BIOS firmware version 1.1.66 (Chengming 3900/Inspiron 3910), 1.2.0 (Inspiron 14 Plus 7420/Inspiron 16 Plus 7620), 1.1.0 (Inspiron 5320), 1.4.1 (Inspiron 5420/Inspiron 5620), or 1.3.0 (Inspiron 7420) depending on model

  1. 1. Identify the exact Dell product model (Inspiron 7420, Inspiron 14 Plus 7420, Inspiron 16 Plus 7620, Inspiron 3910, Inspiron 5320, Inspiron 5420, Inspiron 5620, or Chengming 3900)
  2. 2. Visit Dell Support at https://www.dell.com/support
  3. 3. Enter the service tag or search for the specific product model
  4. 4. Navigate to the Drivers & Downloads section
  5. 5. Select the BIOS category
  6. 6. Download the latest BIOS update version that matches or exceeds: Chengming 3900: 1.1.66 | Inspiron 14 Plus 7420: 1.2.0 | Inspiron 16 Plus 7620: 1.2.0 | Inspiron 3910: 1.1.66 | Inspiron 5320: 1.1.0 | Inspiron 5420: 1.4.1 | Inspiron 5620: 1.4.1 | Inspiron 7420: 1.3.0
  7. 7. Run the BIOS update utility with administrator privileges
  8. 8. Follow the on-screen prompts to complete the BIOS update; the system will restart automatically
Caveat BIOS updates carry inherent risk of system incompatibility; ensure stable power during update process; rollbacks may not be supported

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

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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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-2022-31225 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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