CVE-2025-21315

HIGH
2025-01-14 [email protected]
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 18:03 vuln.today
Patch Released
Mar 28, 2026 - 18:03 nvd
Patch available
CVE Published
Jan 14, 2025 - 18:15 nvd
HIGH 7.8

Tags

Microsoft Memory Corruption Use After Free Information Disclosure Windows 11 24h2 Windows Server 2022 23h2 Windows Server 2025

Description

Microsoft Brokering File System Elevation of Privilege Vulnerability

Analysis

Microsoft Brokering File System Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8). This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Technical Context

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Microsoft Brokering File System Elevation of Privilege Vulnerability Affected products include: Microsoft Windows 11 24H2, Microsoft Windows Server 2022 23H2, Microsoft Windows Server 2025.

Affected Products

Microsoft Windows 11 24H2, Microsoft Windows Server 2022 23H2, Microsoft Windows Server 2025.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +39
POC: 0

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CVE-2025-21315 vulnerability details – vuln.today
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