CVE-2021-26315: AMD Epyc 7003 Firmware

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.

Affected products

  • AMD Epyc 7003 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 72f3 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7313 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7313p Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7343 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 73f3 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7413 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7443 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7443p Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7453 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 74f3 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7513 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7543 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7543p Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 75f3 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7643 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7663 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7713 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7713p Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)
  • AMD Epyc 7763 Firmware: before milanpi-sp3_1.0.0.4 (fixed in milanpi-sp3_1.0.0.4)

Published 2021-11-16. Last modified 2026-06-17.