CVE-2023-4030
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 · uneditedA vulnerability was reported in BIOS for ThinkPad P14s Gen 2, P15s Gen 2, T14 Gen 2, and T15 Gen 2 that could cause the system to recover to insecure settings if the BIOS becomes corrupt.
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 confidenceA vulnerability in the BIOS firmware of ThinkPad P14s Gen 2, P15s Gen 2, T14 Gen 2, and T15 Gen 2 allows the system to recover to insecure settings when BIOS corruption occurs, potentially bypassing security controls.
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 dataall versionsall versionsall versionsall versionsCVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify ThinkPad modelCheck the system label on the device bottom, or run 'wmic csproduct get name' in Command Prompt to confirm the model is P14s Gen 2, P15s Gen 2, T14 Gen 2, or T15 Gen 2Affected if Model is one of P14s Gen 2, P15s Gen 2, T14 Gen 2, or T15 Gen 2 - all versions of these models are affected
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Verify BIOS firmware versionRestart the system, press Enter to interrupt startup, press F1 to enter BIOS setup, and note the BIOS version shown on the Main or Information screen; alternatively, run 'wmic bios get smbiosbiosversion' in Command PromptAffected if Any BIOS version is present on one of the affected models - the vulnerability affects all versions
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Check BIOS recovery settingsIn BIOS setup under the Security or Startup tab, locate the 'BIOS Update' or 'BIOS Recovery' setting. Check if the 'Allow BIOS rollback' or similar recovery option is enabled that allows the system to revert to previous BIOS states upon corruptionAffected if BIOS recovery to previous/insecure states is permitted in the BIOS configuration - the vulnerability enables insecure recovery behavior when BIOS corruption occurs
If the system is a ThinkPad P14s Gen 2, P15s Gen 2, T14 Gen 2, or T15 Gen 2 with any BIOS version, the system is affected by this vulnerability.
Generated from the published advisory. Verify against your own configuration.
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 dataApply the Lenovo BIOS firmware update for affected ThinkPad models to resolve the insecure recovery behavior.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-4030 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-4030 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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