SB2025101508 - Multiple vulnerabilities in Microsoft Brokering File System

Description

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2025-59189)

CWE-ID: CWE-416 - Use After Free

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

The vulnerability allows a local attacker to compromise vulnerable system.

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

2) Use-after-free (CVE-ID: CVE-2025-48004)

CWE-ID: CWE-416 - Use After Free

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

The vulnerability allows a local attacker to compromise vulnerable system.

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

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-59189
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-48004