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Long-Lived Vulnerability in Microsoft Secure Boot

medschneierPublished 2026-07-29

<p>Microsoft&#8217;s Secure Boot has had a <a href="https://arstechnica.com/security/2026/07/microsoft-secure-boot-has-been-broken-for-most-of-its-existence/">serious vulnerability</a> for most of its existence.</p> <blockquote><p>An industry-wide standard Microsoft invented to protect Windows, and later Linux, devices from firmware infections has been trivial to bypass for 13 of its 14 years of e

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://www.schneier.com/blog/archives/2026/07/long-lived-vulnerability-in-microsoft-secure-boot.html