VULNERABILITY INTELLIGENCE

CVE-2021-43323

CVSS score8.2 HIGH
EPSS probability0.35%
CISA KEVNot currently listed
Published2022-02-03
Last modified2026-08-11
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Description

An issue was discovered in UsbCoreDxe in Insyde InsydeH2O with kernel 5.5 before 05.51.45, 5.4 before 05.43.45, 5.3 before 05.35.45, 5.2 before 05.26.45, 5.1 before 05.16.45, and 5.0 before 05.08.45. An SMM callout vulnerability allows an attacker to hijack execution flow of code running in System Management Mode. Exploiting this issue could lead to escalating privileges to SMM.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references