CVE-2021-26403: AMD Epyc 7001 Firmware

Medium severity, CVSS 6.5. EPSS: 0.1% chance of exploitation in the next 30 days.

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.

Affected products

  • AMD Epyc 7001 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7002 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7232p Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7251 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7252 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7261 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7262 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7272 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7281 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7282 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7301 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7302 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7302p Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7351 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7351p Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7352 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7371 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7401 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7401p Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7402 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7402p Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7451 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7452 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • AMD Epyc 7501 Firmware: before naplespi_1.0.0.e (fixed in naplespi_1.0.0.e)
  • AMD Epyc 7502 Firmware: before romepi_1.0.0.9 (fixed in romepi_1.0.0.9)
  • and 16 more

Published 2023-01-11. Last modified 2026-06-17.