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High · 7.0 Public exploit CVE-2025-49677 EUVD-2025-20639GHSA-69q2-qmcc-6rh3

Microsoft Brokering File System Elevation of Privilege Vulnerability

Published Jul 8, 2025 · Updated Feb 13, 2026 · Assigned by microsoft

Description

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Affected products

VendorProductAffectedFixed
Microsoft Windows 11 version 22H2 10.0.22621.0 – < 10.0.22621.5624 10.0.22621.5624

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References