CVE-2024-21829
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 · uneditedImproper input validation in UEFI firmware error handler for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege 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 · moderate confidenceImproper input validation in the UEFI firmware error handler on certain Intel processors allows a privileged local user to escalate privileges. The vulnerability stems from insufficient validation of inputs processed by the firmware error handler, potentially allowing execution with elevated privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- High
- Privileges
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:H/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.
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Identify your Intel processor modelRun 'wmic cpu get name' on Windows or 'cat /proc/cpuinfo | grep "model name"' on Linux to retrieve the processor model.Affected if The processor is one of the Intel CPU families that include the affected UEFI firmware error handler component.
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Determine your UEFI/BIOS firmware versionAccess the system UEFI/BIOS setup (press F2, Del, or F12 during boot) and check the BIOS/UEFI version information, or run 'dmidecode -s bios-version' on Linux or 'wmic bios get smbiosbiosversion' on Windows.Affected if The installed firmware version matches or falls within the range of affected Intel firmware versions for your processor model.
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Check if UEFI error handler or debug features are enabledEnter the UEFI/BIOS setup and navigate to options related to error handling, firmware debugging, or crash dump settings (often under 'Advanced' > 'PCI Configuration' or 'Debug' settings). Look for options like 'Firmware Error Handler', 'Error Log', 'Crash Dump', or similar.Affected if The UEFI firmware error handler or related debug features are enabled and accessible.
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Verify firmware vendor and update statusCheck if the system vendor (Dell, HP, Lenovo, etc.) has released a firmware update for your specific model by reviewing the vendor's support or security advisory pages.Affected if The current firmware is older than the patched version provided by your system vendor for this CVE.
You are affected if you run an Intel processor within the affected product families, your current UEFI/BIOS firmware version is older than the patched version, and the firmware error handler feature is present and enabled on your system.
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 Intel-provided firmware updates for affected processors. Organizations should inventory affected hardware, obtain and test firmware updates in controlled environments before production deployment, and ensure secure firmware update mechanisms are used.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-21829 — 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-2024-21829 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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