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Full vulnerability report · 2023
CVE-2023-29360High confidence

Microsoft Streaming Service Untrusted Pointer Dereference Vulnerability

Microsoft · Streaming Service

8.4HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2024-03-21 as the remediation due date.

Patch available
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-2023-32933

CISA KEV mirrored by ENISA

Microsoft Streaming Service Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 29 Feb 2024. Evidence sources: cisa_kev.
ENISA score
8.4 · CVSS 3.1
Advisory evidence
2 linked advisory records
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2024-03-21 as the remediation due date.

Patch available
01

What, why and how

Microsoft Streaming Service contains an untrusted pointer dereference vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

What

Microsoft Streaming Service contains an untrusted pointer dereference vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Why

The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may gain additional privileges.

What

Microsoft Streaming Service contains an untrusted pointer dereference vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Why

The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may gain additional privileges.

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.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2024-02-29.

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 → Untrusted Pointer Dereference → gain additional privileges
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
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-822 ↗

CWE-822: Untrusted Pointer Dereference. The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

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:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

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.PRNonePrivileges required: The attacker does not need an account or existing 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.IHighIntegrity impact: A successful attack can cause a major loss.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.
UnauthenticatedPrivilege escalationCWE-822CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2023-32933Known-exploited evidence recorded

Microsoft Streaming Service Elevation of Privilege Vulnerability

Official EUVD record
BSI · German · WID-SEC-W-2023-1442Microsoft Windows und Microsoft Windows Server: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Microsoft Windows und Microsoft Windows Server ausnutzen, um seine Rechte zu erweitern, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu Manipulieren und einen Denial-of-Service-Zustand zu verursachen.

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0462Multiples vulnérabilités dans Microsoft Windows

023-29352 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29352 Bulletin de sécurité Microsoft CVE-2023-29353 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29353 Bulletin de sécurité Microsoft CVE-2023-29355 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29355 Bulletin de sécurité Microsoft CVE-2023-29358 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29358 Bulletin de sécurité Microsoft CVE-2023-29359 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29359 Bulletin de sécurité Microsoft CVE-2023-29360 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29360 Bulletin de sécurité Microsoft CVE-2023-29361 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29361 Bulletin de sécurité Microsoft CVE-2023-29362 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29362 Bulletin de sécurité Microsoft CVE-2023-29363 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29363 Bulletin de sécurité Microsoft CVE-2023-29364 du 13 juin 2023 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29364 Bulletin de sécurité Microsoft CVE-2023-

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.
Patch available
Affected
10.0.17763.0 < 10.0.17763.4499; 10.0.0 < 10.0.17763.4499; 10.0.20348.0 < 10.0.20348.1787; 10.0.0 < 10.0.22000.2057; 10.0.19043.0 < 10.0.19044.3086; 10.0.22621.0 < 10.0.22621.1848
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 13 Jun 2023 · Last source change 21 Oct 2025, 23:05 UTC · CWE-822 · Untrusted Pointer Dereference

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-2023-32933
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceOther authority
NVD statusNVD enriched

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
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2023-32933↗CISA KEV record↗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-2023-29360 · cve.blacktree.nl