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CVE-2021-41837

HIGH CVSS: 8.2 Published: 2022-02-03 Modified: 2026-08-11

Description

An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Affected Platforms

Siemens Simatic Ipc847E FirmwareSiemens Simatic Itp1000 FirmwareSiemens Simatic Ipc627ESiemens Simatic Ipc427ESiemens Simatic Ipc277GSiemens Simatic Ipc227G FirmwareSiemens Simatic Ipc847EInsyde Insydeh2OSiemens Simatic Ipc127ESiemens Simatic Ipc227G

Weakness Type

CWE-119

References