SEPTEMBER 30, 2026
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Case File

CVE-2021-20487

CRITICAL · CVSS 9.1 EPSS 0.68%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-26 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. See the original NVD description below for full technical details.

CVE
CVE-2021-20487
Severity
CRITICAL
CVSS
9.1
EPSS
0.68%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)