CVE-2021-43522

CVE-2021-43522CVE-2021-43522

insyde / insydeh2o

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Scoring

CVSS 7.5 ()
VectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Last modified2026-08-11
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.