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.

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.

Samsung 850 Pro and PM851 solid-state drives and Seagate ST500LT015 and ST500LT025 hard disk drives, when in sleep mode and operating in Opal or eDrive mode on Lenovo ThinkPad T440s laptops with BIOS 2.32; ThinkPad W541 laptops with BIOS 2.21; Dell Latitude E6410 laptops with BIOS A16; or Latitude E6430 laptops with BIOS A16, allow physically proximate attackers to bypass self-encrypting drive (SED) protection by leveraging failure to detect when SATA drives are unplugged in Sleep Mode, aka a "Hot Plug attack."

Samsung 850 Pro and PM851 solid-state drives and Seagate ST500LT015 and ST500LT025 hard disk drives, when used on Windows and operating in Opal mode on Lenovo ThinkPad T440s laptops with BIOS 2.32 or ThinkPad W541 laptops with BIOS 2.21, or in Opal or eDrive mode on Dell Latitude E6410 laptops with BIOS A16 or Latitude E6430 laptops with BIOS A16, allow physically proximate attackers to bypass self-encrypting drive (SED) protection by triggering a soft reset and booting from an alternative OS, aka a "Forced Restart Attack."