What is CVE-2021-26343?

CVE-2021-26343 is a medium-severity vulnerability in Amd 3rd Gen Epyc, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.5/10. Published 2023-01-11.

How severe is CVE-2021-26343?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Amd 3rd Gen Epyc

CVE-2021-26343

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.

EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Amd 3rd Gen Epyc — versions various
Amd Epyc_7003
Amd Epyc_7003_firmware
Amd Epyc_72f3
Amd Epyc_72f3_firmware
Amd Epyc_7313
Amd Epyc_7313_firmware
Amd Epyc_7313p
Amd Epyc_7313p_firmware
Amd Epyc_7343

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

psirt@amd.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26343?: CVE-2021-26343 is a medium-severity vulnerability in Amd 3rd Gen Epyc, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.5/10. Published 2023-01-11.
How severe is CVE-2021-26343?: Medium severity. CVSS v3 base score is 5.5 out of 10.