CVE-2023-20527: AMD Epyc 7001 Firmware

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service.

Affected products

AMD Epyc 7001 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7002 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7003 Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7232p Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7251 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7252 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7261 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7262 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7272 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7281 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7282 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 72f3 Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7301 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7302 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7302p Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7313 Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7313p Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7343 Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7351 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7352 Firmware: before romepi_1.0.0.c (fixed in romepi_1.0.0.c)
AMD Epyc 7371 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7373x Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 73f3 Firmware: before milanpi_1.0.0.5 (fixed in milanpi_1.0.0.5)
AMD Epyc 7401 Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
AMD Epyc 7401p Firmware: before naplespi_1.0.0.g (fixed in naplespi_1.0.0.g)
and 39 more

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