VULNERABILITY INTELLIGENCE

CVE-2021-46778

CVSS score5.6 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2022-08-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

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.

Weakness classification

  • nvd@nist.gov: CWE-203

Primary references