CVE:CVE-2021-33625
CNNVD:CNNVD-202202-117
Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。
Insyde InsydeH2O Hardware-2-Operating System (H2O) UEFI固件存在缓冲区错误漏洞，该漏洞允许攻击者将固定或可预测的数据写入 SMRAM。利用此问题可能会导致 SMM 的权限升级。
solution:Upgrade insyde insydeh2o to a higher version than 5.16.23,5.26.23,5.35.23,5.43.22,5.51.22,and avoid the version [5.1,5.16.23),[5.2,5.26.23),[5.3,5.35.23),[5.4,5.43.22),[5.5,5.51.22); Upgrade netapp fas/aff_bios to a higher version than -; Upgrade siemens ruggedcom_ape1808_firmware to a higher version than -; Upgrade siemens simatic_field_pg_m5_firmware to a higher version than -; Upgrade siemens simatic_ipc127e_firmware to a higher version than -; Upgrade siemens simatic_itp1000_firmware to a higher version than -; Upgrade siemens simatic_ipc277g_firmware to a higher version than -; Upgrade siemens simatic_ipc227g_firmware to a higher version than -; Upgrade siemens simatic_ipc327g_firmware to a higher version than -; Upgrade siemens simatic_ipc377g_firmware to a higher version than -; Upgrade siemens simatic_ipc427e_firmware to a higher version than -; Upgrade siemens simatic_ipc477e_firmware to a higher version than -; Upgrade siemens simatic_ipc477e_pro_firmware to a higher version than -; Upgrade siemens simatic_ipc627e_firmware to a higher version than -; Upgrade siemens simatic_ipc647e_firmware to a higher version than -; Upgrade siemens simatic_ipc677e_firmware to a higher version than -; Upgrade siemens simatic_ipc847e_firmware to a higher version than -; Upgrade siemens simatic_field_pg_m6_firmware to a higher version than -