What is CVE-2025-59189?

CVE-2025-59189 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Brokering File System Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2025-59189 cover?

CVE-2025-59189 covers the following CVE IDs: CVE-2025-59189. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-59189?

CVE-2025-59189 has a CVSS v3 base score of 7.4, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-59189?

CVE-2025-59189 affects 6 products, including: Windows 11 Version 24H2 for ARM64-based Systems; Windows 11 Version 24H2 for x64-based Systems; Windows 11 Version 25H2 for ARM64-based Systems; Windows 11 Version 25H2 for x64-based Systems; Windows Server 2025; and others — see the full list on the advisory page.

CVE-2025-59189HighCVSS 7.4

Microsoft Brokering File System Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 14, 2025

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-59189 →

📋 Description

Use after free in Microsoft Brokering File System allows an unauthorized attacker to elevate privileges locally.

🎯 Affected products6

Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5066835 (Security Update) — fixed build 10.0.26200.6899 KB5066835 (Security Update) — fixed build 10.0.26100.6899

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59189
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066835
referencehttps://support.microsoft.com/help/5066835