DBX updates are now delivered through the monthly servicing updates. No further user action is necessary. Provides guidance for installing a DBX update to fix a vulnerability that exists in some Secure Boot modules if they trust the Microsoft third-party UEFI CA.

We have released the DbxUpdate.bin file for this issue on UEFI.org. These hashes include all revoked Windows boot managers released between Windows 8 and the initial release of Windows 10 that do not respect the Code Integrity Policy.

How to get this update. Method 1: Windows Update. This update is available through Windows Update. It will be downloaded and installed automatically. Method 2: Microsoft Update Catalog. To get the stand-alone package for this update, go to the Microsoft Update Catalog website. Method 3: Windows Server Update Services.

Introduction . Microsoft has released a Microsoft security advisory about this issue for IT professionals. The security advisory contains additional security-related information.

To avoid this issue, we recommend that you apply this update after you remove noncompliant UEFI modules from your system to make sure that the system can successfully start, and consider upgrading to compliant UEFI modules if they are available. For more information about your UEFI module, contact the UEFI module supplier.

Key changes include: Addresses an issue with a Secure Boot feature update that may cause BitLocker to go into recovery mode because of a race condition. Microsoft strongly recommends you always install the latest servicing stack update (SSU) for your operating system before installing the latest monthly security update.

Introduction . Microsoft has released a Microsoft security advisory about this issue for IT professionals. The security advisory contains additional security-related information.

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker installs an affected boot manager and bypasses Windows security features. To learn more about the vulnerability, see Microsoft Security Bulletin MS16-100.

Security update for Windows 10, version 1607, 1703, 1709, 1803, 1809, 1903, 1909, Windows Server 2016 and Windows Server 2019: February 11, 2020 - Microsoft Support. Windows 10, version 1909, all editions More... IMPORTANT This article is superseded by KB5012170: Security update for Secure Boot DBX.

Windows Server 2022. Windows 11版本 21H2. Windows 11版本 22H2. Azure Stack HCI 版本 1809. Azure Stack Data Box 版本 1809 (ASDB) 摘要. 此安全更新改进了“应用于”部分中列出的受支持的 Windows 版本的 Secure Boot DBX。 关键更改包括以下内容： 具有基于统一可扩展固件接口 (UEFI) 的固件的 Windows 设备，可以在启用 Secure Boot 的情况下运行。 Secure Boot 禁止签名数据库 (DBX) 可防止加载 UEFI 模块。 此更新将模块添加到 DBX。 安全启动中存在安全功能绕过漏洞。