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Full vulnerability report · 2024
CVE-2023-46103High confidence

n/a Intel(R) Core(TM) Ultra Processors — Sequence of Processor Instructions Leads to Unexpected Behavior

n/a · Intel(R) Core(TM) Ultra Processors

4.7MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archiveintel-microcodeVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.3.20240514.0ubuntu0.24.04.1Canonical record ↗Source updated 10 Sept 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2023-50364

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to potentially enable denial of service via local access.

What

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to potentially enable denial of service via local access.

Why

Specific combinations of processor instructions lead to undesirable behavior such as locking the processor until a hard reset performed.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to potentially enable denial of service via local access.

Why

Specific combinations of processor instructions lead to undesirable behavior such as locking the processor until a hard reset performed.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Sequence of Processor Instructions Leads to Unexpected Behavior → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-1281 ↗

CWE-1281: Sequence of Processor Instructions Leads to Unexpected Behavior. Specific combinations of processor instructions lead to undesirable behavior such as locking the processor until a hard reset performed.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Denial of serviceCWE-1281
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2025-0225Dell PowerProtect Data Domain: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Dell PowerProtect Data Domain ausnutzen, um erhöhte Rechte zu erlangen, einen Denial-of-Service-Zustand herbeizuführen und einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2024-1152Intel Prozessoren: Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in verschiedenen Intel Prozessoren ausnutzen, um Informationen offenzulegen, um einen Denial-of-Service-Zustand zu erzeugen, und um Privilegien zu erhöhen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0855Multiples vulnérabilités dans les produits Juniper Networks

cord?id=CVE-2023-4004 Référence CVE CVE-2023-4147 https://www.cve.org/CVERecord?id=CVE-2023-4147 Référence CVE CVE-2023-43490 https://www.cve.org/CVERecord?id=CVE-2023-43490 Référence CVE CVE-2023-43785 https://www.cve.org/CVERecord?id=CVE-2023-43785 Référence CVE CVE-2023-43786 https://www.cve.org/CVERecord?id=CVE-2023-43786 Référence CVE CVE-2023-43787 https://www.cve.org/CVERecord?id=CVE-2023-43787 Référence CVE CVE-2023-44431 https://www.cve.org/CVERecord?id=CVE-2023-44431 Référence CVE CVE-2023-45733 https://www.cve.org/CVERecord?id=CVE-2023-45733 Référence CVE CVE-2023-45866 https://www.cve.org/CVERecord?id=CVE-2023-45866 Référence CVE CVE-2023-46103 https://www.cve.org/CVERecord?id=CVE-2023-46103 Référence CVE CVE-2023-47038 https://www.cve.org/CVERecord?id=CVE-2023-47038 Référence CVE CVE-2023-48161 https://www.cve.org/CVERecord?id=CVE-2023-48161 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-50229 https://www.cve.org/CVERecord?id=CVE-2023-50229 Référence CVE CVE-2023-50230 https://www.cve.org/CVERecord?id=CVE-2023-50230 Référence CVE CVE-2023-51580 https://www.cve.org/CVERecord?id=CVE-2023-51580 Référence CVE CVE-2023-51589 https://www.cve.org/CVERecord?id=CVE-2023-51589 Référence CVE CVE-2023-51592 https://www.cve.org/CVERecord?id=CV

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0713Multiples vulnérabilités dans les produits VMware

ord?id=CVE-2023-22655 Référence CVE CVE-2023-28746 https://www.cve.org/CVERecord?id=CVE-2023-28746 Référence CVE CVE-2023-3164 https://www.cve.org/CVERecord?id=CVE-2023-3164 Référence CVE CVE-2023-38575 https://www.cve.org/CVERecord?id=CVE-2023-38575 Référence CVE CVE-2023-39368 https://www.cve.org/CVERecord?id=CVE-2023-39368 Référence CVE CVE-2023-43490 https://www.cve.org/CVERecord?id=CVE-2023-43490 Référence CVE CVE-2023-44487 https://www.cve.org/CVERecord?id=CVE-2023-44487 Référence CVE CVE-2023-45733 https://www.cve.org/CVERecord?id=CVE-2023-45733 Référence CVE CVE-2023-45745 https://www.cve.org/CVERecord?id=CVE-2023-45745 Référence CVE CVE-2023-46103 https://www.cve.org/CVERecord?id=CVE-2023-46103 Référence CVE CVE-2023-47855 https://www.cve.org/CVERecord?id=CVE-2023-47855 Référence CVE CVE-2023-50387 https://www.cve.org/CVERecord?id=CVE-2023-50387 Référence CVE CVE-2023-50868 https://www.cve.org/CVERecord?id=CVE-2023-50868 Référence CVE CVE-2023-7104 https://www.cve.org/CVERecord?id=CVE-2023-7104 Référence CVE CVE-2024-1013 https://www.cve.org/CVERecord?id=CVE-2024-1013 Référence CVE CVE-2024-26256 https://www.cve.org/CVERecord?id=CVE-2024-26256 Référence CVE CVE-2024-28182 https://www.cve.org/CVERecord?id=CVE-2024-28182 Référence CVE CVE-2024-33599 https://www.cve.org/CVERecord?id=CVE-

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0397Multiples vulnérabilités dans les produits Intel

d?id=CVE-2023-45221 Référence CVE CVE-2023-45315 https://www.cve.org/CVERecord?id=CVE-2023-45315 Référence CVE CVE-2023-45320 https://www.cve.org/CVERecord?id=CVE-2023-45320 Référence CVE CVE-2023-45733 https://www.cve.org/CVERecord?id=CVE-2023-45733 Référence CVE CVE-2023-45736 https://www.cve.org/CVERecord?id=CVE-2023-45736 Référence CVE CVE-2023-45743 https://www.cve.org/CVERecord?id=CVE-2023-45743 Référence CVE CVE-2023-45745 https://www.cve.org/CVERecord?id=CVE-2023-45745 Référence CVE CVE-2023-45845 https://www.cve.org/CVERecord?id=CVE-2023-45845 Référence CVE CVE-2023-45846 https://www.cve.org/CVERecord?id=CVE-2023-45846 Référence CVE CVE-2023-46103 https://www.cve.org/CVERecord?id=CVE-2023-46103 Référence CVE CVE-2023-46689 https://www.cve.org/CVERecord?id=CVE-2023-46689 Référence CVE CVE-2023-46691 https://www.cve.org/CVERecord?id=CVE-2023-46691 Référence CVE CVE-2023-47165 https://www.cve.org/CVERecord?id=CVE-2023-47165 Référence CVE CVE-2023-47169 https://www.cve.org/CVERecord?id=CVE-2023-47169 Référence CVE CVE-2023-47210 https://www.cve.org/CVERecord?id=CVE-2023-47210 Référence CVE CVE-2023-47282 https://www.cve.org/CVERecord?id=CVE-2023-47282 Référence CVE CVE-2023-47855 https://www.cve.org/CVERecord?id=CVE-2023-47855 Référence CVE CVE-2023-47859 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
See references
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 16 May 2024 · Last source change 2 Aug 2024, 20:37 UTC · CWE-1281 · Sequence of Processor Instructions Leads to Unexpected Behavior

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-50364
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD not scheduled

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2023-50364↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-46103 · cve.blacktree.nl