Memory Buffer Bounds ErrorWeakness · CWE-119

CVE-2024-36434

HIGH · 7.5 CVSS v3.1 Published 2024-07-15

Mitigation only

No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.

See remediation →

77/100

Remediation priority · High

Zero-click

Official description

NVD · unedited

An SMM callout vulnerability was discovered in Supermicro X11DPH-T, X11DPH-Tq, and X11DPH-i motherboards with BIOS firmware before 4.4.

Technical summary

dbcve analysis · high confidence

This is an SMM (System Management Mode) callout vulnerability in Supermicro X11DPH-T, X11DPH-Tq, and X11DPH-i server motherboards. SMM operates at ring -2 privilege, below the OS, making this a serious vulnerability that could allow an attacker with local or physical access to execute code in the most privileged CPU mode, potentially bypassing security controls.

MitigationUpdate the BIOS firmware on affected Supermicro motherboards to version 4.4 or later to remediate this SMM callout vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown

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?

dbcve checks

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

Identify the motherboard model

Run 'dmidecode -t baseboard' or check the physical board label to confirm the exact model number

Affected if The model is NOT one of: X11DPH-T, X11DPH-Tq, or X11DPH-i (if different model, not affected by this specific CVE)
Check the installed BIOS version

Run 'dmidecode -s bios-version' or access IPMI web interface to view BIOS firmware version

Affected if Unable to determine BIOS version (SMM vulnerability cannot be assessed without version data)
Compare BIOS version against the fix

Compare the detected BIOS version number to version 4.4; note that version numbers may appear as 4.x format in tool output

Affected if BIOS version is below 4.4 (for example, 3.x or any version earlier than 4.4) - this indicates the SMM callout vulnerability is present

You are affected if you have a Supermicro X11DPH-T, X11DPH-Tq, or X11DPH-i motherboard with a BIOS version earlier than 4.4, as this is an SMM flaw that exists in the pre-fix firmware versions.

Generated from the published advisory. Verify against your own configuration.

Remediation

dbcve · scoped

Mitigation available No clean upgrade yet — mitigate in the meantime

Mitigation

Update the BIOS firmware on affected Supermicro motherboards to version 4.4 or later to remediate this SMM callout vulnerability.

Recommended fix High confidence

BIOS firmware version 4.4 or later for Supermicro X11DPH-T, X11DPH-Tq, and X11DPH-i motherboards

1. Visit the official Supermicro support website at www.supermicro.com
2. Navigate to the support/drivers and downloads section for the specific motherboard model (X11DPH-T, X11DPH-Tq, or X11DPH-i)
3. Locate and download the BIOS firmware version 4.4 or later
4. Review the BIOS update instructions provided by Supermicro
5. Create a backup of the current BIOS if possible
6. Run the BIOS update utility following Supermicro's documented procedures
7. Verify the BIOS version has been successfully updated after the process completes

Caveat BIOS firmware updates carry inherent risks; power interruption during the update process can render the motherboard non-functional; ensure stable power and follow update procedures exactly

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

Have this fixed Scoped from the published advisory

Consultation4.0 h
Implementation3.0 h
Testing4.0 h
Review / QA2.0 h

13.0 hours of engineering $2,300

Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,680.

Scan for this in your stack

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References

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-36434 in production — separate from our analysis above.

Notes0 Guidelines

Know something about CVE-2024-36434?

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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What this is

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.

What belongs here

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

At a glance

A fix existsA vendor remedy is published

Severity 7.5 High

Exploit likelihood EPSS, next 30 days 0.2%

Remediation

A high-priority fix

Have this fixed 13 hrs · Moderate

Typical engagement from $2,300

Get a fix See the full breakdown ↓

A high-priority vulnerability. Send your environment and a specialist will scope CVE-2024-36434 and return a fixed quote and timeline.

You’ll deal with our team directly and deploy the reviewed fix to staging first — never straight to production.

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.

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.

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.

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.

Check your environment

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.

Scan for this in your stack

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Practitioner notes

No notes yet

Official description

Technical summary

CVSS breakdown

Am I affected?

Remediation

References