CVE-2024-42444
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 · uneditedAPTIOV contains a vulnerability in BIOS where an attacker may cause a TOCTOU Race Condition by local means. Successful exploitation of this vulnerability may lead to execution of arbitrary code on the target device.
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 · moderate confidenceAPTIOV has a BIOS-level Time-of-Check Time-of-Use (TOCTOU) race condition vulnerability. A local attacker can exploit this timing window to execute arbitrary code on the target device. This is a high-severity (7.8 CVSS) system-level flaw affecting firmware integrity.
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>= 5.0, < 5.038CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/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.
-
Retrieve BIOS/firmware versionRun 'dmidecode -s bios-version' on Linux, or use 'wmic bios get version' on Windows, or check via system BIOS setup utilityAffected if The version returned is < 5.038 or shows as 5.0.x/5.0xx (any version >= 5.0 but below 5.038)
-
Identify BIOS vendorRun 'dmidecode -s bios-vendor' on Linux, or 'wmic bios get manufacturer' on Windows, or view BIOS info in system setupAffected if The vendor displays as American Megatrends, AMI, or indicates Aptio V firmware
-
Confirm firmware is Aptio VRun 'dmidecode' and search for 'Aptio' in the output, or check BIOS/UEFI setup screen for firmware type indicationAffected if The firmware is identified as AMI Aptio V (any subversion)
-
Cross-reference system model with vendor advisoryMatch your system model/make with the hardware vendor's BIOS update list for CVE-2024-42444, check vendor security advisoriesAffected if The vendor has released a BIOS update for this CVE but you are running an unpatched version in the affected range
A system is affected if it runs Ami Aptio V firmware version 5.0 or higher but below 5.038, as this version range contains the TOCTOU race condition 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.
dbcve · scoped5.038
Apply the vendor-supplied BIOS/firmware update for APTIOV to patch the TOCTOU race condition. Since this is a firmware-level issue, organizations should identify affected systems and deploy the corresponding security update through their hardware vendor's recommended update process.
Aptio V 5.038
- Identify the current Aptio V BIOS version running on the affected system
- Download Aptio V version 5.038 or later from the AMI support portal (go.ami.com)
- Follow the standard BIOS firmware update procedure for your hardware platform
- Verify the BIOS version has been successfully updated to 5.038 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-42444 — 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-2024-42444 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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