CVE intelligence and bounded remediation

CVE-2021-46754 — Amd Ryzen 5300G Firmware security vulnerability

Critical CVSS 9.1

Insufficient input validation in the ASP (AMD Secure Processor) bootloader may allow an attacker with a compromised Uapp or ABL to coerce the bootloader into exposing sensitive information to the SMU (System Management Unit) resulting in a potential loss of confidentiality and integrity.

Severity
Critical
CVSS
9.1 (3.1)
Published
2023-05-09
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-20

Affected products

  • amd / ryzen_5300g_firmware / cezannepi-fp6_1.0.0.6
  • amd / ryzen_5300ge_firmware / cezannepi-fp6_1.0.0.6
  • amd / ryzen_5500_firmware / cezannepi-fp6_1.0.0.6
  • amd / ryzen_5600_firmware / cezannepi-fp6_1.0.0.6
  • amd / ryzen_5600g_firmware / cezannepi-fp6_1.0.0.6
  • amd / ryzen_5600ge_firmware / cezannepi-fp6_1.0.0.6

Showing 6 representative product identities from 168 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Information disclosure and sensitive data exposure

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace sensitive data through responses, errors, logs, metrics, traces, caches, exports, files, backups, and client bundles.
  • Identify affected subjects, tenants, retention windows, access controls, and downstream copies without opening unnecessary sensitive records.
  • Review metadata, timing, status, length, and existence signals as well as direct content disclosure.

Remediate safely

  • Minimize collection and output, apply field-level authorization and redaction at a centralized boundary, and return generic external errors.
  • Remove secrets and sensitive data from logs, artifacts, URLs, caches, and client-side bundles; rotate credentials that may have been exposed.
  • Update the affected component and add synthetic-data tests for response, error, observability, and export paths.

Authoritative sources

Complete CVE record and remediation plan

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