CVE-2023-28396

Privileged local denial of service

Published Feb 14, 2024 · Updated Aug 14, 2024

Improper access control in Intel JHL8440 Thunderbolt 4 Controller firmware before 41 allows local users to interrupt service. Intel has not published the affected firmware locus or the operation that fails to enforce access controls. Exploitation requires high local privileges and high complexity; the denial-of-service mode and limited integrity effect are not further disclosed.

CVSS severity6.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Intel JHL8440 Thunderbolt 4 Controller firmware before 41 allows local users to interrupt service. Intel has not published the affected firmware locus or the operation that fails to enforce access controls. Exploitation requires high local privileges and high complexity; the denial-of-service mode and limited integrity effect are not further disclosed.

The record

CVE
CVE-2023-28396
Published
Feb 14, 2024
Updated
Aug 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel JHL8440 Thunderbolt 4 Controller
Classifications
CWE-284, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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=before 41

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel JHL8440 Thunderbolt 4 Controllerversion=before 41

Published CVSS scores

6.1IntelCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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