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Vulnerability record · CVE-2021-46778 · published 10 August 2022

CVE-2021-46778: Amd athlon 3050ge firmware observable discrepancy vulnerability

AAmd · Athlon 3050ge Firmware

Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

5.6 CVSS 3.1 Medium EPSS 0.23% · top 87.5% CWE-203 · Observable discrepancy
5.6CVSS 3.1 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

150 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1039 Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1039 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-46778), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.