CVE-2020-5953

None

Open

TLP:CLEAR

NVD CVE.org

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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).

Details

EPSS Score ⓘ: 0.28%

20.5th percentile
Confidence: 90%
Published: Feb 3, 2022
Last Modified: Aug 11, 2026

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