CVE-2022-36338

HighCVSS 8.2/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published: Sep 23, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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