CVE-2021-42059

MEDIUM

Insyde InsydeH2O Kernel 5.0-5.4 - Out-of-bounds Write in UEFI DisplayTypeDxe DXE Driver

Title source: llm
STIX 2.1

Description

An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.08.41, Kernel 5.1 before 05.16.41, Kernel 5.2 before 05.26.41, Kernel 5.3 before 05.35.41, and Kernel 5.4 before 05.42.20. A stack-based buffer overflow leads toarbitrary code execution in UEFI DisplayTypeDxe DXE driver.

References (5)

Core 5
Core References
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge/SA-2022006
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20220216-0008/
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/796611

Scores

CVSS v3 6.7
EPSS 0.0006
EPSS Percentile 19.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
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