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Microsoft’s Secure Boot has been broken for a decade and no one noticed until now

A long-standing vulnerability in Microsoft-signed UEFI shims has left Secure Boot susceptible to bypasses for a decade.

By · Published July 14, 2026  23:26 UTC · Updated July 28, 2026  17:24 UTC

8sources
8articles
6velocity
+0%since first seen
88d agofirst detected
Text:
🤖 AI Dossier

Evidence dossier

Intelligence passport

69/100 Strong
8distinct sources shown
40velocity measurements
2language editions checked
All brief claims passed the second-source checkbrief evidence status

Measured timeline

Answered

Who discovered the vulnerability?

The vulnerability was discovered by ESET Research.

What specifically is being bypassed?

Attackers can bypass the Secure Boot process using old Microsoft-signed UEFI applications.

How many Linux UEFI shims are affected?

According to The Hacker News, 11 old Microsoft-signed Linux UEFI shims could let attackers bypass Secure Boot.

🌍 Cross-language spread

Archynetys detected this story across 2 language editions of the world's news.

🇬🇧 English Jul 14, 23:24 UTC
🇪🇸 Spanish Jul 14, 23:46 UTC · WeLiveSecurity

Detected by matching proper nouns and figures that survive translation. Times reflect when each edition's coverage was first indexed.

Where it stands

⚡ Executive Intelligence Takeaways Corroborated across 8 independent newsrooms
  • Velocity & Diffusion: Coverage exploded across 8 distinct news outlets with 8 published articles, achieving a live velocity of 6.
  • Primary Driver: A long-standing vulnerability in Microsoft-signed UEFI shims has left Secure Boot susceptible to bypasses for a decade.
  • Predictive Outlook: Archynetys algorithmic models forecast this story will fade from trending status over the next 24 hours.
  • Source Integrity: Verified strictly against primary headline reporting under zero-hallucination protocols.

ESET Research has identified vulnerable UEFI shims that undermine the Secure Boot process on devices. These old, Microsoft-signed Linux UEFI shims can be used by attackers to bypass security protections.

Coverage from Ars Technica, The Hacker News, and SC Media emphasizes that this flaw has existed for ten years. WeLiveSecurity and The Manila Times highlight the specific role of these forgotten shims in undermining device security.

Attention is now focused on the 11 specific Microsoft-signed Linux UEFI shims identified as vulnerable and the potential for attackers to utilize them to bypass Secure Boot.

Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated 88d ago.

Coverage (8)

The coverage curve

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Topics

Microsoft Secure Boot UEFI ESET Research Linux

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◼ Archived Technology 🔮 fades ✓

Hands-on

4 news sources are covering this Technology story right now — Archynetys is tracking how fast it spreads.

4 sources 4 articles v 10 2d ago

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