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Critical 16-Year-Old UEFI Flaw Can Run Code Before Secure Boot on Network-Booting Servers

The Hacker News · info@thehackernews.com (The Hacker News)

Published by the source: Wed, 28 Oct 2026 17:20:00 +0530

From The Hacker News

A critical 16-year-old flaw in EDK II, the open-source code that most hardware makers use to build UEFI firmware, can allow an attacker to run code on a machine before its operating system loads, but only while the machine is booting over the network. UEFI firmware is the software that runs first when a computer is switched on, before the operating system. An attacker who can reach the machine

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