CVE-2023-46103

Local service interruption via undisclosed instruction sequence

Published May 16, 2024 · Updated Aug 2, 2024

Processor instruction handling in Intel Core Ultra Processors allows local users to interrupt service by executing an instruction sequence. An undisclosed sequence of processor instructions triggers unexpected processor behavior; Intel has not published the instructions or whether the result is a hang, crash, or reboot. Exploitation requires authenticated local low-privileged code execution and high attack complexity, and the documented impact is limited to availability.

CVSS severity4.7
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Processor instruction handling in Intel Core Ultra Processors allows local users to interrupt service by executing an instruction sequence. An undisclosed sequence of processor instructions triggers unexpected processor behavior; Intel has not published the instructions or whether the result is a hang, crash, or reboot. Exploitation requires authenticated local low-privileged code execution and high attack complexity, and the documented impact is limited to availability.

The record

CVE
CVE-2023-46103
Published
May 16, 2024
Updated
Aug 2, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Core Ultra Processors
Classifications
CWE-1281, CAPEC-212, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 16, 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=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Core Ultra Processorsversion=See references

Published CVSS scores

4.7Intel CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1281Sequence of Processor Instructions Leads to Unexpected Behavior
CAPEC-212Functionality Misuse
T1499.004Application or System Exploitation

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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