CVE-2021-41837

HIGH

Insyde InsydeH2O 5.0-5.5 - Untrusted Pointer Dereference in AhciBusDxe

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge/SA-2022024
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20220222-0003/
Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/796611
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge

Scores

CVSS v3 8.2
EPSS 0.0006
EPSS Percentile 19.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (15)
insyde/insydeh2o 5.0 - 5.08.41
siemens/simatic_field_pg_m5_firmware
siemens/simatic_field_pg_m6_firmware
siemens/simatic_ipc127e_firmware
siemens/simatic_ipc227g_firmware
siemens/simatic_ipc277g_firmware
siemens/simatic_ipc327g_firmware
siemens/simatic_ipc377g_firmware
siemens/simatic_ipc427e_firmware
siemens/simatic_ipc477e_firmware
... and 5 more
Published Feb 03, 2022
Tracked Since Feb 18, 2026