Code-execution flaw in UEFI firmware threatens most servers on planet Earth

Reported by Ars Technica (Dan Goodin)

Summary by Cyber Security News27 Oct 2026, 21:25 CET

About this summary. This is a short excerpt from the description that Ars Technica published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://arstechnica.com/security/2026/10/code-execution-flaw-in-uefi-firmware-threatens-most-servers-on-planet-earth/

Defenders across the world face the burden of responding to yet another botched code-execution vulnerability, this time in boot-time firmware used by most of the world’s server vendors and data centers. The vulnerability, with a severity rating of 9.5 out of 10, resides in the TianoCore EDK II, an open source codebase that hardware makers and cloud providers use to create the UEFI firmware that runs during the boot-up sequence.

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