PT-2026-58304 · Microsoft · Brokering File System

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-50305

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Brokering File System (affected versions not specified)

Description A use-after-free condition occurs in the Microsoft Brokering File System, which allows an authorized attacker to elevate privileges locally. Use-after-free is a memory corruption issue where an application continues to use a pointer after it has been freed, potentially leading to arbitrary code execution or privilege escalation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

CVE-2026-50305

Affected Products

Brokering File System

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-50305 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50305 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50305 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50305 · Security Note