Secure Boot Security Feature Bypass Vulnerability

<p>A security feature bypass vulnerability exists when Windows Secure Boot improperly loads a boot manager 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. Furthermore, the attacker could bypass Secure Boot Integrity Validation for BitLocker and Device Encryption security features.</p> <p>To exploit the vulnerability, an attacker who has gained administrative privileges or who has physical access to a target device could install an affected boot manager and then install a policy affected by the vulnerability onto a target device.</p> <p>The security update addresses the vulnerability by blacklisting affected boot managers.</p>

Where it's fixed