CVE-2026-9805: Insyde Software INSYDEH2O

Low severity, CVSS 2.7. EPSS: 0.1% chance of exploitation in the next 30 days.

SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

Affected products

• Insyde Software INSYDEH2O

Published 2026-08-26. Last modified 2026-08-31.