Insyde Security Advisory 2022007

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2022007 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 callout vulnerability allowing a possible attacker to hijack execution flow of a code running in System Management Mode. Exploiting this issue could lead to escalating privileges to SMM.

Vulnerability Details


This corresponds to CVE-2021-42060. It affects the Int15ServiceSmm driver. It was reported by the Binarly efiXplorer team. It was fixed in InsydeH2O versions kernel 5.0: 05.08.49, kernel 5.1: 05.16.49, kernel 5.2: 05.23.22, Kernel 5.3: 05.32.22, Kernel 5.4: unaffected, kernel 5.5: unaffected.


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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