SB2025111159 - Multiple vulnerabilities in Microsoft Windows Ancillary Function Driver for WinSock

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2025-62213)

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Ancillary Function Driver for WinSock. A local user can win a race condition and gain elevated privileges on the target system.

2) Race condition (CVE-ID: CVE-2025-62217)

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

The vulnerability exists due to a race condition in Windows Ancillary Function Driver for WinSock. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

3) Untrusted Pointer Dereference (CVE-ID: CVE-2025-60719)

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

The vulnerability exists due to untrusted pointer dereference in Windows Ancillary Function Driver for WinSock. A local user 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-2025-62213
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-62217
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-60719