CVE-2025-48004CWE-416

Microsoft Brokering File System Elevation of Privilege Vulnerability

High · published October 14, 2025

CVSS v3.1
7.4
EPSS
2%
Percentile
81.9
In the wild
Unconfirmed
What it is

⚡ A sneaky use-after-free bug in Microsoft Brokering File System could let attackers elevate their privileges locally with just the right conditions! Think of this as a key that should have been destroyed but accidentally got put back in circulation — it can grant access to areas of the system that should remain locked. It's like giving someone a VIP pass to the concert, only to realize the event is over and they can still get in! This vulnerability could allow an unauthorized attacker to gain elevated privileges on the system, opening the door for them to execute arbitrary code or manipulate sensitive data. Imagine a burglar who not only picks the lock but also finds the secret stash of valuables. The potential risk is high, and the consequences could be absolutely devastating!

Put simply

Think of this as a key that should have been destroyed but accidentally got put back in circulation — it can grant access to areas of the system that should remain locked. It's like giving someone a VIP pass to the concert, only to realize the event is over and they can still get in! The issue arises from a use-after-free vulnerability in the Microsoft Brokering File System, which fails to properly manage memory after an object is freed, allowing attackers to exploit this flaw to gain higher access rights on the local machine.

What to do

This vulnerability could allow an unauthorized attacker to gain elevated privileges on the system, opening the door for them to execute arbitrary code or manipulate sensitive data. Imagine a burglar who not only picks the lock but also finds the secret stash of valuables. The potential risk is high, and the consequences could be absolutely devastating! To mitigate this risk, ensure that all systems are patched to the latest version provided by Microsoft. Regularly monitor for updates and apply security patches promptly to safeguard against any potential exploitation. Additionally, limit user permissions and access controls as a precaution. You've got this! With the right updates and practices, you can lock down your systems and keep those sneaky attackers out! 🛡️

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.02133 · 81.9th percentile
Weakness
CWE-416 · Use After Free
Published
2025-10-14T17:00Z
EPSS history
Timeline
  • 14 OCT 17:00Z
    Microsoft Brokering File System Elevation of Privilege Vulnerability
    cvelistv5