CVE-2023-43000Sunday, March 8, 2026

Microsoft Streaming Service Remote Code Execution Vulnerability

A remote code execution vulnerability exists in Microsoft Streaming Service when the service improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code with elevated privileges.

Not KEV Listed✓ Fix Available
Microsoft Streaming Service Remote Code Execution Vulnerability
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This section explains the vulnerability in everyday language, so anyone can understand the risk and impact.

This security flaw affects Microsoft's streaming service software that handles video and audio streaming on Windows systems. The bug allows attackers to trick the system into running malicious code with high-level permissions, potentially taking complete control of the affected computer.

What makes this particularly dangerous is that an attacker could exploit this vulnerability without requiring any user interaction - they just need to send specially crafted data to the streaming service. Think of it like leaving a backdoor wide open that lets intruders walk right in and take control of the house.

Affected Products

3affected products identified
ProductVendorVersionPatched
>Windows 11Microsoft21H2, 22H2KB5029244
>Windows 10Microsoft20H2, 21H2, 22H2KB5029244
>Windows ServerMicrosoft2019, 2022KB5029244
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Remediation

Fix Available

Microsoft has released security updates to address this vulnerability. Users should:

1. Install the latest Windows security updates (KB5029244 or later)

2. Enable automatic updates to prevent future vulnerabilities

3. Verify the streaming service is running the latest version

4. Monitor system logs for any suspicious activity

CVSS Score
8.8
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Vector (v3.1)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Quick Info
CVE IDCVE-2023-43000
Severityhigh
FixAvailable
KEVNot Listed
PublishedMar 8, 2026