# CVE-2016-7247: Secure Boot Component Security Feature Bypass Vulnerability CVE-2016-7247 is fixed in 15 products on 1 platform, first by KB3198586, released November 8, 2016. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2016-7247 - Priority: Urgent - CVSS: 6.2 (Important) - EPSS: 0.0603 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Nov 8, 2016 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-7247 ## Description

A security feature bypass vulnerability exists when Windows Secure Boot improperly loads a boot policy that is affected by the vulnerability. An attacker who successfully exploited this vulnerability could disable code integrity checks, allowing test-signed executables and drivers to be loaded onto a target device.

To exploit the vulnerability, an attacker who has physical access or Administrative rights to a target device could install an affected boot policy.

The security update addresses the vulnerability by revoking affected boot policies in the firmware. The revocation protection level depends upon platform firmware. The Windows event channel Microsoft-Windows-Kernel-Boot may be used to determine the protection level provided. Note that an additional reboot is needed to view the event:

For systems that provide baseline protection, firmware updates from your OEM may be available that upgrade systems to enhanced protection.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1511 for 32-bit Systems | | [KB3198586](https://patchblox.com/security/data/fix/microsoft/kb3198586.md) | Nov 8, 2016 | | Microsoft | Windows 10 Version 1511 for x64-based Systems | | [KB3198586](https://patchblox.com/security/data/fix/microsoft/kb3198586.md) | Nov 8, 2016 | | Microsoft | Windows 10 Version 1607 for 32-bit Systems | | [KB3200970](https://patchblox.com/security/data/fix/microsoft/kb3200970.md) | Nov 8, 2016 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | | [KB3200970](https://patchblox.com/security/data/fix/microsoft/kb3200970.md) | Nov 8, 2016 | | Microsoft | Windows 10 for 32-bit Systems | 10240.17190 | [KB3198585](https://patchblox.com/security/data/fix/microsoft/kb3198585.md) | Nov 8, 2016 | | Microsoft | Windows 10 for x64-based Systems | 10240.17190 | [KB3198585](https://patchblox.com/security/data/fix/microsoft/kb3198585.md) | Nov 8, 2016 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB3197873](https://patchblox.com/security/data/fix/microsoft/kb3197873.md) | Nov 8, 2016 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB3197874](https://patchblox.com/security/data/fix/microsoft/kb3197874.md) | Nov 8, 2016 | | Microsoft | Windows 8.1 for x64-based systems | | [KB3197873](https://patchblox.com/security/data/fix/microsoft/kb3197873.md) | Nov 8, 2016 | | Microsoft | Windows 8.1 for x64-based systems | | [KB3197874](https://patchblox.com/security/data/fix/microsoft/kb3197874.md) | Nov 8, 2016 | | Microsoft | Windows RT 8.1 | | [KB3197874](https://patchblox.com/security/data/fix/microsoft/kb3197874.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 | | [KB3197877](https://patchblox.com/security/data/fix/microsoft/kb3197877.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 | | [KB3197876](https://patchblox.com/security/data/fix/microsoft/kb3197876.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB3197877](https://patchblox.com/security/data/fix/microsoft/kb3197877.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB3197876](https://patchblox.com/security/data/fix/microsoft/kb3197876.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 R2 | | [KB3197873](https://patchblox.com/security/data/fix/microsoft/kb3197873.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 R2 | | [KB3197874](https://patchblox.com/security/data/fix/microsoft/kb3197874.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB3197873](https://patchblox.com/security/data/fix/microsoft/kb3197873.md) | Nov 8, 2016 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB3197874](https://patchblox.com/security/data/fix/microsoft/kb3197874.md) | Nov 8, 2016 | | Microsoft | Windows Server 2016 | | [KB3200970](https://patchblox.com/security/data/fix/microsoft/kb3200970.md) | Nov 8, 2016 | | Microsoft | Windows Server 2016 (Server Core installation) | | [KB3200970](https://patchblox.com/security/data/fix/microsoft/kb3200970.md) | Nov 8, 2016 | --- Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo