Insyde Security Advisory 2022014

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2022016 Software AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H 7.5 02/01/2022 02/01/2022


SMM memory corruption vulnerability allowing a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Vulnerability Details


This corresponds to CVE-2021-33625. It affects the HddPassword driver. It was reported by the Binarly efiXplorer team. Fixes are available in the InsydeH2O kernel: Kernel 5.1: 05.16.23, Kernel 5.2: 05.26.23, Kernel 5.3: 05.35.23, Kernel 5.4: 05.43.22, Kernel 5.5: 05.51.22


Insyde Software would like to thank Binarly for reporting this issue.

Revision History:

Revision Date Description
1.0 02/01/2022 Initial Release
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