CVSS 3.1
5.6 mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:NCVE-2021-46778
Medium (5.6) in amd. EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
- CWE
- CWE-203
- Published
- Modified
- Record from
- the NVD, synced
Affected
- amd:athlon_3050ge_firmware
- amd:athlon_3150g_firmware
- amd:athlon_3150ge_firmware
- amd:epyc_7001_firmware
- amd:epyc_7002_firmware
- amd:epyc_7003_firmware
- amd:epyc_7232p_firmware
- amd:epyc_7251_firmware
- amd:epyc_7252_firmware
- amd:epyc_7261_firmware
- amd:epyc_7262_firmware
- amd:epyc_7272_firmware
- amd:epyc_7281_firmware
- amd:epyc_7282_firmware
- amd:epyc_72f3_firmware
- amd:epyc_7301_firmware
- amd:epyc_7302_firmware
- amd:epyc_7302p_firmware
- amd:epyc_7313_firmware
- amd:epyc_7313p_firmware
- amd:epyc_7343_firmware
- amd:epyc_7351_firmware
- amd:epyc_7351p_firmware
- amd:epyc_7352_firmware
- amd:epyc_7371_firmware
- amd:epyc_7373x_firmware
- amd:epyc_73f3_firmware
- amd:epyc_7401_firmware
- amd:epyc_7401p_firmware
- amd:epyc_7402_firmware
- amd:epyc_7402p_firmware
- amd:epyc_7413_firmware
- amd:epyc_7443_firmware
- amd:epyc_7443p_firmware
- amd:epyc_7451_firmware
- amd:epyc_7452_firmware
- amd:epyc_7453_firmware
- amd:epyc_7473x_firmware
- amd:epyc_74f3_firmware
- amd:epyc_7501_firmware
- amd:epyc_7502_firmware
- amd:epyc_7502p_firmware
- amd:epyc_7513_firmware
- amd:epyc_7532_firmware
- amd:epyc_7542_firmware
- amd:epyc_7543_firmware
- amd:epyc_7543p_firmware
- amd:epyc_7551_firmware
- amd:epyc_7551p_firmware
- amd:epyc_7552_firmware