CVE intelligence and bounded remediation

CVE-2021-26343 — Amd Epyc 7003 Firmware security vulnerability

Medium CVSS 5.5

Insufficient validation in ASP BIOS and DRTM commands may allow malicious supervisor x86 software to disclose the contents of sensitive memory which may result in information disclosure.

Severity
Medium
CVSS
5.5 (3.1)
Published
2023-01-11
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-668

Affected products

  • amd / epyc_7003_firmware
  • amd / epyc_72f3_firmware
  • amd / epyc_7313_firmware
  • amd / epyc_7313p_firmware
  • amd / epyc_7343_firmware
  • amd / epyc_7373x_firmware

Showing 6 representative product identities from 24 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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