BlackX UEFI bootkit exploits Baton Drop flaw to bypass Secure Boot

A new UEFI bootkit named BlackX, deployed in an espionage campaign in early 2026, exploited the old Baton Drop vulnerability to bypass Secure Boot and load a malicious driver designed to interfere with security solutions from Kaspersky and Avast. The attack targets high-value systems, highlighting the persistent risk of legacy firmware flaws.