CVE-2021-26337 5.5 medium EPSS 0.2%
Medium (5.5) in amd. EPSS 0.2% chance of exploitation in the next 30 days.
Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.
Severity
CVSS 3.1 5.5 medium CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NEnable JavaScript to see the metric table and diagram.
EPSS 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
Published 2021-11-16
Modified 2026-06-17
Record from the NVD, synced 2026-10-19 Affected amd:epyc_7002_firmware amd:epyc_7003_firmware amd:epyc_7232p_firmware amd:epyc_7252_firmware amd:epyc_7262_firmware amd:epyc_7272_firmware amd:epyc_7282_firmware amd:epyc_72f3_firmware amd:epyc_7302_firmware amd:epyc_7302p_firmware amd:epyc_7313_firmware amd:epyc_7313p_firmware amd:epyc_7343_firmware amd:epyc_7352_firmware amd:epyc_73f3_firmware amd:epyc_7402_firmware amd:epyc_7402p_firmware amd:epyc_7413_firmware amd:epyc_7443_firmware amd:epyc_7443p_firmware amd:epyc_7452_firmware amd:epyc_7453_firmware amd:epyc_74f3_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_7552_firmware amd:epyc_75f3_firmware amd:epyc_7642_firmware amd:epyc_7643_firmware amd:epyc_7662_firmware amd:epyc_7663_firmware amd:epyc_7702_firmware amd:epyc_7702p_firmware amd:epyc_7713_firmware amd:epyc_7713p_firmware amd:epyc_7742_firmware amd:epyc_7763_firmware amd:epyc_7f32_firmware amd:epyc_7f52_firmware amd:epyc_7f72_firmware amd:ryzen_3_3100_firmware amd:ryzen_3_3300g_firmware amd:ryzen_3_3300x_firmware amd:ryzen_3_5400u_firmware amd:ryzen_3_5425u_firmware References Check your stack JSON