CVE-2024-36434

Local firmware compromise through undisclosed SMM callout

Published Jul 15, 2024 · Updated Aug 2, 2024

SMM callout in Supermicro X11DPH-T, X11DPH-Tq, and X11DPH-i BIOS before 4.4 allows local users to compromise firmware execution. Supermicro identifies the flaw as an SMM callout but does not disclose the affected handler, untrusted memory object, or operation performed through the callout. Exploitation requires high privileges and complex local conditions and can cross the firmware trust boundary to affect protected execution.

CVSS severity7.5
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SMM callout in Supermicro X11DPH-T, X11DPH-Tq, and X11DPH-i BIOS before 4.4 allows local users to compromise firmware execution. Supermicro identifies the flaw as an SMM callout but does not disclose the affected handler, untrusted memory object, or operation performed through the callout. Exploitation requires high privileges and complex local conditions and can cross the firmware trust boundary to affect protected execution.

The record

CVE
CVE-2024-36434
Published
Jul 15, 2024
Updated
Aug 2, 2024
Vendor
Supermicro
Product
X11DPH-T
Classifications
CWE-119, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Supermicro · X11DPH-Tversion=0 <4.4
Supermicro · X11DPH-Tqversion=0 <4.4
Supermicro · X11DPH-iversion=0 <4.4

Published CVSS scores

7.5MITRECVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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