Local privilege escalation via use-after-free
Published Oct 14, 2025 · Updated Oct 14, 2025
Use-after-free in Microsoft Brokering File System on affected Windows builds allows local users to elevate privileges. Microsoft has not published the object lifetime, triggering operation, or stale reference involved in the Brokering File System flaw. Exploitation requires local access and high attack complexity, but no prior privileges or user interaction; successful exploitation grants elevated Windows privileges.
Summary
What happened
Use-after-free in Microsoft Brokering File System on affected Windows builds allows local users to elevate privileges. Microsoft has not published the object lifetime, triggering operation, or stale reference involved in the Brokering File System flaw. Exploitation requires local access and high attack complexity, but no prior privileges or user interaction; successful exploitation grants elevated Windows privileges.
The record
- CVE
- CVE-2025-48004
- Published
- Oct 14, 2025
- Updated
- Oct 14, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Oct 14, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.6899
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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