CVE-2022-34325: Insyde INSYDEH2O

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

DMA transactions which are targeted at input buffers used for the StorageSecurityCommandDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the StorageSecurityCommandDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by

Affected products

• Insyde INSYDEH2O: from 5.3, before 05.36.23 (fixed in 05.36.23); from 5.2, before 05.27.23 (fixed in 05.27.23); from 5.4, before 05.44.23 (fixed in 05.44.23); from 5.5, before 05.52.23 (fixed in 05.52.23)

Published 2022-11-14. Last modified 2026-06-17.