CVE-2021-26351: AMD Ryzen 3 3100 Firmware

Medium severity, CVSS 5.5. 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 (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial of service.

Affected products

• AMD Ryzen 3 3100 Firmware: affected versions not specified
• AMD Ryzen 3 3300g Firmware: affected versions not specified
• AMD Ryzen 3 3300x Firmware: affected versions not specified
• AMD Ryzen 3 5125c Firmware: affected versions not specified
• AMD Ryzen 3 5400u Firmware: affected versions not specified
• AMD Ryzen 3 5425c Firmware: affected versions not specified
• AMD Ryzen 3 5425u Firmware: affected versions not specified
• AMD Ryzen 5 3400g Firmware: affected versions not specified
• AMD Ryzen 5 3450g Firmware: affected versions not specified
• AMD Ryzen 5 3600 Firmware: affected versions not specified
• AMD Ryzen 5 3600x Firmware: affected versions not specified
• AMD Ryzen 5 5560u Firmware: affected versions not specified
• AMD Ryzen 5 5600h Firmware: affected versions not specified
• AMD Ryzen 5 5600hs Firmware: affected versions not specified
• AMD Ryzen 5 5600u Firmware: affected versions not specified
• AMD Ryzen 5 5600x Firmware: affected versions not specified
• AMD Ryzen 5 5625c Firmware: affected versions not specified
• AMD Ryzen 5 5625u Firmware: affected versions not specified
• AMD Ryzen 5 5700g Firmware: affected versions not specified
• AMD Ryzen 5 5700ge Firmware: affected versions not specified
• AMD Ryzen 7 3700x Firmware: affected versions not specified
• AMD Ryzen 7 3800x Firmware: affected versions not specified
• AMD Ryzen 7 5800h Firmware: affected versions not specified
• AMD Ryzen 7 5800hs Firmware: affected versions not specified
• AMD Ryzen 7 5800u Firmware: affected versions not specified
• and 24 more

Published 2022-05-12. Last modified 2026-06-17.