A potential security vulnerability with pre-boot DMA may allow unauthorized UEFI code execution using open-case attacks. This industry-wide issue requires physically accessing internal expansion slots with specialized hardware and software tools to modify UEFI code in memory. This affects HP Intel-based Business PCs that support Microsoft Windows 10 Kernel DMA protection. Affected versions depend on platform (prior to 01.04.02; or prior to 02.04.01; or prior to 02.04.02).

A potential security vulnerability has been identified in multiple HP products and versions which involves possible execution of arbitrary code during boot services that can result in elevation of privilege. The EFI_BOOT_SERVICES structure might be overwritten by an attacker to execute arbitrary SMM (System Management Mode) code. A list of affected products and versions are available in https://support.hp.com/rs-en/document/c06456250.