<ul data-eligibleForWebStory="true"><li>Security researchers discovered a Secure Boot bypass vulnerability (CVE-2025-3052) in a Microsoft-signed firmware module.</li><li>The flaw allows attackers to disable Secure Boot, compromising system trust before the OS loads.</li><li>The vulnerability is severe as it enables firmware-level malware infections, making detection and removal challenging.</li><li>Systems relying on Microsoft's UEFI CA 2011 certificate are at risk, affecting various hardware models.</li><li>Microsoft issued a patch in June 2025 to blacklist affected firmware modules using the Secure Boot forbidden database.</li><li>Another related vulnerability named 'Hydroph0bia' (CVE-2025-47827) was found in Insyde H2O firmware.</li><li>Remedies include installing Windows updates, confirming revocations, monitoring firmware integrity, and applying available updates.</li><li>The incident reflects the importance of regular updates, firmware visibility, and a defense-in-depth strategy for system security.</li></ul>

Microsoft-Signed Firmware Bypass Threatens Secure Boot Trust

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