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CVE-2020-5953

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CVE-2020-5953

Published: Feb 3, 2022

Modified: Nov 4, 2025

PUBLISHED

Description

A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).

VendorProductVersions

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affected
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