CVE-2021-26408: AMD Epyc 7001 Firmware

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.

Affected products

  • AMD Epyc 7001 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7002 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7232p Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7251 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7252 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7262 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7272 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7281 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7282 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7301 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7302 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7302p Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7351 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7351p Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7352 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7401 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7401p Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7402 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7402p Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7451 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7452 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7501 Firmware: before naplespi-sp3_1.0.0.g (fixed in naplespi-sp3_1.0.0.g)
  • AMD Epyc 7502 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7502p Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • AMD Epyc 7532 Firmware: before romepi-sp3_1.0.0.c (fixed in romepi-sp3_1.0.0.c)
  • and 13 more

Published 2022-05-10. Last modified 2026-06-17.