CVE-2022-36448: Insyde INSYDEH2O

High severity, CVSS 8.2. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. There is an SMM memory corruption vulnerability in the Software SMI handler in the PnpSmm driver.

Affected products

• Insyde INSYDEH2O: from 5.4, before 05.44.30 (fixed in 05.44.30); from 5.5, before 05.52.30 (fixed in 05.52.30)

Published 2022-09-28. Last modified 2026-06-17.