What is CVE-2021-26350?

CVE-2021-26350 is a medium-severity vulnerability in AMD Epyc 7232p, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.7/10. Published 2022-05-11.

How severe is CVE-2021-26350?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in AMD Epyc 7232p

CVE-2021-26350

A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register which may result in a potential denial of service.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2022-05-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-26350?: CVE-2021-26350 is a medium-severity vulnerability in AMD Epyc 7232p, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.7/10. Published 2022-05-11.
How severe is CVE-2021-26350?: Medium severity. CVSS v3 base score is 4.7 out of 10.