SB2026071632 - Multiple vulnerabilities in Microsoft Brokering File System

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Main Vulnerability Database SB2026071632

SB2026071632 - Multiple vulnerabilities in Microsoft Brokering File System

Published: July 16, 2026

Security Bulletin ID SB2026071632
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2026-49162)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Microsoft Brokering File System. A local user can gain elevated privileges on the target system.


2) Use-after-free (CVE-ID: CVE-2026-50466)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Microsoft Brokering File System. A local user can gain elevated privileges on the target system.


3) Use-after-free (CVE-ID: CVE-2026-50458)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Microsoft Brokering File System. A local user can gain elevated privileges on the target system.


4) Double free (CVE-ID: CVE-2026-50361)

CWE-ID: CWE-415 - Double Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to a boundary error in Microsoft Brokering File System. A local user can pass specially crafted data to the application, trigger double free error and gain elevated privileges on the system.


5) Use-after-free (CVE-ID: CVE-2026-50305)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Microsoft Brokering File System. A local user can gain elevated privileges on the target system.


Remediation

Install update from vendor's website.

References