VULNERABILITY INTELLIGENCE

CVE-2021-20487

CVSS score9.1 CRITICAL
EPSS probability0.68%
CISA KEVNot currently listed
Published2021-05-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Description

IBM Power9 Self Boot Engine(SBE) could allow a privileged user to inject malicious code and compromise the integrity of the host firmware bypassing the host firmware signature verification process.

Weakness classification

  • nvd@nist.gov: CWE-347

Primary references