CVE-2023-28468: Insyde Kernel

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS.

Affected products

• Insyde Kernel: from 5.0, up to and including 5.5

Published 2023-08-03. Last modified 2026-06-17.