Anthropic's Claude found a newly disclosed zero-click Linux vulnerability, CVE-2026-98432, which a common scoring system rated 9.8 out of 10. Claude chained together several operations that turned a niche error into an easy-to-exploit flaw, letting attackers run code on others' servers without any click. Ubuntu users faced delays in receiving patches. The bug was widely called the most dangerous ever seen online over the weekend. Shopify's chief executive posted about it Saturday, and that post reached three million views. An Anthropic staffer said no bug seemed more severe, and crypto figures Kyle Samani and Mert Mumtaz also weighed in. Red Hat reiterated the critical rating, while Amazon was still upgrading infrastructure. Anthropic said researchers had accessed some Linux machines within 53 minutes and is helping firms apply patches.
Why it matters: It shows how a single Linux flaw can let attackers run code on servers without user action, a risk that drew attention across the crypto industry.
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