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VulnerabilitiesOct 30, 2026

In Other News: Anthropic Breach Dispute, UEFI Flaw Hits Most Servers, Cloudflare AI Data Leak

UEFI flaw impacts most servers, Iran eyed in freezer hacks, and AI startup disputes Anthropic breach scope.

A critical 16-year-old UEFI vulnerability (CVE-2026-97631) in TianoCore EDK II affects most servers worldwide, allowing code execution before Secure Boot. Separately, Iran is suspected of hacking US military freezers, and a startup claims to have breached Anthropic's internal systems, though Anthropic disputes the scope and claims rule violations.

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The lesson from this incident

Full lesson

A critical vulnerability in TianoCore EDK II, the open-source UEFI firmware used by the vast majority of servers worldwide, has gone unpatched for 16 years, allowing attackers to execute arbitrary code before Secure Boot even initializes — effectively bypassing one of the foundational hardware security controls. This incident illustrates how firmware-level vulnerabilities are chronically overlooked in enterprise patch management programs, which tend to focus on operating systems and applications while neglecting the underlying firmware stack. The age of this flaw (16 years) signals a systemic failure in both vendor disclosure timelines and organizational vulnerability tracking. Because UEFI-level compromise can survive OS reinstallation and persist beneath traditional security tooling, the blast radius of exploitation is extraordinarily high. Organizations that lack firmware inventory and patching workflows are effectively running unauditable attack surfaces at the hardware root of trust.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • cve — CVE-2026-97631

Entities

Anthropic (vendor)Iran (threat_actor)TianoCore EDK II (product)UEFI (technology)Cloudflare (vendor)Google (vendor)