CVE-2021-33625

HighCVSS 7.5/10Last modified Aug 11, 2026

Description

An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

No affected versions have been published.

Timeline

Published: Feb 3, 2022
Last modified: Aug 11, 2026
NVD status: Modified

Related CVEs from 2021

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