VULNERABILITY INTELLIGENCE

CVE-2022-36338

CVSS score8.2 HIGH

EPSS probability0.46%

CISA KEVNot currently listed

Published2022-09-23

Last modified2026-06-17

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver FwBlockServiceSmm, creating SMM, leads to arbitrary code execution. An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, and then generate a software SMI.