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CVE-2026-50466— Microsoft Brokering File System Elevation of Privilege Vulnerability

CVSS 7.8 · High EPSS 0.24% · P15

Affected Version Matrix 5

VendorProductVersion RangeStatus
MicrosoftWindows 11 Version 24H210.0.26100.0< 10.0.26100.8875affected
MicrosoftWindows 11 Version 25H210.0.26200.0< 10.0.26200.8875affected
MicrosoftWindows 11 version 26H110.0.28000.0< 10.0.28000.2525affected
MicrosoftWindows Server 202510.0.26100.0< 10.0.26100.33158affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0< 10.0.26100.33158affected
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I. Basic Information for CVE-2026-50466

Vulnerability Information
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Vulnerability Title
Microsoft Brokering File System Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use after free in Windows Brokering File System 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
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Brokering File System 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Brokering File System是美国Microsoft公司的一个文件系统。 Microsoft Brokering File System存在资源管理错误漏洞，该漏洞源于释放后重用问题，可能导致授权攻击者在本地提权。以下版本受到影响：Windows 11 Version 24H2 10.0.26100.0版本之前的10.0.26100.x版本、Windows 11 Version 25H2 10.0.26200.0版本之前的10.0.26200.x版本、Windows 11
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

VendorProductAffected VersionsCPESubscribe
MicrosoftWindows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.8875 -
MicrosoftWindows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.8875 -
MicrosoftWindows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.2525 -
MicrosoftWindows Server 2025 10.0.26100.0 ~ 10.0.26100.33158 -
MicrosoftWindows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.33158 -

II. Public POCs for CVE-2026-50466

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III. Intelligence Information for CVE-2026-50466

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Vendor Advisories for CVE-2026-50466 (1)

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

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CVE-2026-550089.6 CRITICALMicrosoft Exchange Server Spoofing Vulnerability
CVE-2026-503809.6 CRITICALWindows GDI+ Remote Code Execution Vulnerability
CVE-2026-497989.3 CRITICALWindows Kernel Elevation of Privilege Vulnerability
CVE-2026-550409.1 CRITICALMicrosoft SharePoint Server Security Feature Bypass Vulnerability
CVE-2026-579698.8 HIGHAzure CycleCloud Elevation of Privilege Vulnerability
CVE-2026-541218.8 HIGHActive Directory Certificate Services Elevation of Privilege 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-416

V. Comments for CVE-2026-50466

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