VULNERABILITY INTELLIGENCE

CVE-2021-33625

CVSS score7.5 HIGH
EPSS probability0.32%
CISA KEVNot currently listed
Published2022-02-03
Last modified2026-08-11
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-119

Primary references