ASP Firmware Vulnerability: Out-of-Bounds Write in BIOS Mailbox Commands Handling

CVE-2021-26402 · HIGH Severity

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

Learn more about our Cis Benchmark Audit For Apple Ios.