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Critical UEFI vulnerability threatens servers during network-based boot
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Fusion42 · 28 October 2026 · Fusion42 review
A critical UEFI firmware vulnerability (CVE-2026-97631) affecting network-based boot processes (PXE) in servers allows attackers to execute code before the OS loads, potentially compromising sensitive system components. The flaw impacts firmware using TianoCore EDK II, used by many manufacturers, and patch deployment is expected to be slow and complex.
This Wire brief sits within Fusion42's coverage of Cybersecurity, Security Infrastructure and Cloud Infrastructure.
◆ ◆ The Wire takeaway
Network-booting servers are exposed to boot-time attacks via UEFI firmware flaws that let hackers run code before OS checks. You must assess your hardware vendors and urgently consider disabling PXE boot to protect critical systems.
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1 source · 28 Oct 2026
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