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Elevation of Privilege in Microsoft Brokering File System

IdentifiersCVE-2025-48004CWE-416· Use After Free

CVE-2025-48004 is a local elevation of privilege vulnerability in Microsoft Brokering File System caused by a use-after-free condition. According to the provided content, the flaw allows an unauthorized attacker to elevate privileges locally. No additional technical details about the specific vulnerable function, code path, trigger conditions, or affected versions were provided in the source content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a local attacker to elevate privileges on the affected system. Based on the provided information, this would enable execution with higher privileges than initially held, potentially allowing compromise of the local host, access to protected resources, and follow-on actions such as persistence or disabling security controls. The provided content does not specify the final privilege level obtained.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce local attack surface by limiting untrusted local access, restricting the ability of low-privileged users to log on or execute code on affected systems, and monitoring for suspicious local privilege escalation activity. However, the provided content does not include any vendor-specific workaround or mitigation beyond applying the security update.

Remediation

Patch, then assume compromise.

Apply the Microsoft security update that addresses CVE-2025-48004 as part of the October 2025 security updates. No more specific product-version remediation details were provided in the supplied content.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationWindows 11 22h2operating_system
Microsoft CorporationWindows 11 23h2operating_system
Microsoft CorporationWindows 11 24h2operating_system
Microsoft CorporationWindows 11 25h2operating_system
Microsoft CorporationWindows 11 2h2operating_system
Microsoft CorporationWindows Server 2022 23h2operating_system
Microsoft CorporationWindows Server 2025operating_system
Microsoft CorporationWindows Server 23h2operating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures1

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.