SB2025011446 - Multiple vulnerabilities in Microsoft Brokering File System

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2025-21315)

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 win a race condition and gain elevated privileges on the target system.

2) Use-after-free (CVE-ID: CVE-2025-21372)

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 win a race condition and 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-2025-21315
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21372