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CVE-2026-50440— Windows Audio Service Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 11 Version 24H2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Audio Service是美国Microsoft公司的一款音频服务管理模块。 Microsoft Windows Audio Service存在安全漏洞，该漏洞源于Windows Audio Service中共享资源并发执行时同步不当（竞争条件），可能导致授权攻击者在本地提升权限。

CVSS 7.8 · High EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 3

VendorProduct Version RangeStatus
Microsoft Windows 11 Version 24H2 10.0.26100.0< 10.0.26100.8875 affected
Microsoft Windows 11 Version 25H2 10.0.26200.0< 10.0.26200.8875 affected
Microsoft Windows 11 version 26H1 10.0.28000.0< 10.0.28000.2525 affected
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I. Basic Information for CVE-2026-50440

Vulnerability Information
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Vulnerability Title
Windows Audio Service Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Audio Service 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Audio Service是美国Microsoft公司的一款音频服务管理模块。 Microsoft Windows Audio Service存在安全漏洞，该漏洞源于Windows Audio Service中共享资源并发执行时同步不当（竞争条件），可能导致授权攻击者在本地提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.8875 -
Microsoft Windows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.8875 -
Microsoft Windows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.2525 -

II. Public POCs for CVE-2026-50440

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III. Intelligence Information for CVE-2026-50440

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Vendor Advisories for CVE-2026-50440 (1)

Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total

CVE-2026-57092 9.9 CRITICAL Microsoft Windows VMSwitch Elevation of Privilege Vulnerability
CVE-2026-50518 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-55010 9.8 CRITICAL Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
CVE-2026-50447 9.8 CRITICAL Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
CVE-2026-42990 9.8 CRITICAL SQL Server ODBC driver Elevation of Privilege Vulnerability
CVE-2026-55944 9.8 CRITICAL Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co
CVE-2026-56159 9.8 CRITICAL DHCP Server Service Remote Code Execution Vulnerability
CVE-2026-56190 9.8 CRITICAL Remote Desktop Protocol Remote Code Execution Vulnerability
CVE-2026-56188 9.8 CRITICAL Windows Server Network driver Remote Code Execution Vulnerability
CVE-2026-58644 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-50522 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-54118 9.8 CRITICAL Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-54117 9.8 CRITICAL Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-54990 9.8 CRITICAL Remote Desktop Client Remote Code Execution Vulnerability
CVE-2026-49172 9.8 CRITICAL Windows FTP Service Remote Code Execution Vulnerability
CVE-2026-48561 9.6 CRITICAL Microsoft Edge Copilot Remote Code Execution Vulnerability
CVE-2026-50380 9.6 CRITICAL Windows GDI+ Remote Code Execution Vulnerability
CVE-2026-55008 9.6 CRITICAL Microsoft Exchange Server Spoofing Vulnerability
CVE-2026-49798 9.3 CRITICAL Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-55040 9.1 CRITICAL Microsoft SharePoint Server Security Feature Bypass Vulnerability

Showing top 20 of 570 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 11 Version 24H2
Same vendor: Microsoft
Same weakness: CWE-362

V. Comments for CVE-2026-50440

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