CVE-2026-88245

Windows Brokering File System Elevation of Privilege Vulnerability

Published Nov 10, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
Missing authentication for critical function in Windows Brokering File System allows an authorized attacker to elevate privileges locally.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Missing authentication for critical function in Windows Brokering File System allows an authorized attacker to elevate privileges locally.
Title Windows Brokering File System Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows Server 2025
Weaknesses CWE-306
CPEs cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 13, 2026, 6:05 PM
Reserved
Sep 9, 2026, 10:05 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 7:21 PM
Modified
Nov 11, 2026, 1:17 AM