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Full vulnerability report · 2024
CVE-2023-38575High confidence

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access

n/a · Intel(R) Processors

5.5MediumCVSS 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
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-2023-42374

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

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

What

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

Why

Hardware structures shared across execution contexts (e.g., caches and branch predictors) can violate the expected architecture isolation between contexts.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

What

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

Why

Hardware structures shared across execution contexts (e.g., caches and branch predictors) can violate the expected architecture isolation between contexts.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

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 → Non-Transparent Sharing of Microarchitectural Resources → obtain information outside the intended access boundary
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
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-1303 ↗

CWE-1303: Non-Transparent Sharing of Microarchitectural Resources. Hardware structures shared across execution contexts (e.g., caches and branch predictors) can violate the expected architecture isolation between contexts.

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:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
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.
CWE-1303
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2024-0615Intel Prozessor: Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in Intel Prozessor ausnutzen, um Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen oder seine Privilegien zu erweitern.

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

VERecord?id=CVE-2023-3090 Référence CVE CVE-2023-31248 https://www.cve.org/CVERecord?id=CVE-2023-31248 Référence CVE CVE-2023-32233 https://www.cve.org/CVERecord?id=CVE-2023-32233 Référence CVE CVE-2023-3390 https://www.cve.org/CVERecord?id=CVE-2023-3390 Référence CVE CVE-2023-35001 https://www.cve.org/CVERecord?id=CVE-2023-35001 Référence CVE CVE-2023-35788 https://www.cve.org/CVERecord?id=CVE-2023-35788 Référence CVE CVE-2023-3610 https://www.cve.org/CVERecord?id=CVE-2023-3610 Référence CVE CVE-2023-3776 https://www.cve.org/CVERecord?id=CVE-2023-3776 Référence CVE CVE-2023-38408 https://www.cve.org/CVERecord?id=CVE-2023-38408 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-2023-4004 https://www.cve.org/CVERecord?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-

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

ERecord?id=CVE-2018-25032 Référence CVE CVE-2019-9511 https://www.cve.org/CVERecord?id=CVE-2019-9511 Référence CVE CVE-2019-9513 https://www.cve.org/CVERecord?id=CVE-2019-9513 Référence CVE CVE-2022-37434 https://www.cve.org/CVERecord?id=CVE-2022-37434 Référence CVE CVE-2022-40735 https://www.cve.org/CVERecord?id=CVE-2022-40735 Référence CVE CVE-2022-48622 https://www.cve.org/CVERecord?id=CVE-2022-48622 Référence CVE CVE-2023-22655 https://www.cve.org/CVERecord?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=

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0211Multiples vulnérabilités dans les produits Citrix

De multiples vulnérabilités ont été découvertes dans les produits Citrix . Elle permet à un attaquant de provoquer une atteinte à la confidentialité des données et un problème de sécurité non spécifié par l'éditeur.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0213Multiples vulnérabilités dans les produits Intel

De multiples vulnérabilités ont été découvertes dans les produits Intel . Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une élévation de privilèges et une atteinte à la confidentialité des données.

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
some Intel(R) Processors
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 14 Mar 2024 · Last source change 13 Feb 2025, 17:01 UTC · CWE-1303 · Non-Transparent Sharing of Microarchitectural Resources

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-2023-42374
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-2023-42374↗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-2023-38575 · cve.blacktree.nl