H-ISAC TLP White Intelligence Report Dell Boot Recovery Remote Code Execution June 24, 2021

Eclypsium security researchers have discovered a vulnerability in the Dell BIOSConnect feature available on at least 180 models of consumer and business laptops, desktops, and tablets, including devices protected by Secure Boot and Secured-core PCs. This undesignated vulnerability has a calculated CVSS score of 8.3 (High), potentially impacting millions of devices. The vulnerability can enable an attacker to remotely execute code in the pre-boot environment. Such code may alter the initial state for an operating system, potentially violating common assumptions on the hardware/firmware layers and breaking OS-level security controls. For a full list of affacted Dell products, please access the Dell advisory, which can be found here. View the entire report below.