Gigabyte UEFI Firmware Vulnerability Let Attackers Execute Arbitrary Code in the SMM Environment

Critical security vulnerabilities have been discovered in Gigabyte UEFI firmware that could allow attackers to execute arbitrary code in System Management Mode (SMM), one of the most privileged execution environments in modern processors. The vulnerabilities, disclosed by the Software Engineering Institute’s CERT Coordination Center on July 11, 2025, affect multiple Gigabyte systems and could enable attackers to bypass fundamental security protections, including Secure Boot and Intel BootGuard. ...

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