CVE-2026-9805 FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow

CVE-2026-9805 affects Insyde SMM firmware , specifically the IHISI command handler (FMTSWriteUseIntelLib) responsible for processing FMTS command 0x32 . The handler reads and writes data without validating buffer size, potentially leading to a buffer overflow . The CNA-assigned CVSS 3.1 score is ...