CVE-2023-20592: AMD Epyc 7001 Firmware

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine (VM) memory integrity.

Affected products

AMD Epyc 7001 Firmware: affected versions not specified
AMD Epyc 7203 Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7203p Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7232p Firmware: affected versions not specified
AMD Epyc 7251 Firmware: affected versions not specified
AMD Epyc 7252 Firmware: affected versions not specified
AMD Epyc 7261 Firmware: affected versions not specified
AMD Epyc 7262 Firmware: affected versions not specified
AMD Epyc 7272 Firmware: affected versions not specified
AMD Epyc 7281 Firmware: affected versions not specified
AMD Epyc 7282 Firmware: affected versions not specified
AMD Epyc 72f3 Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7301 Firmware: affected versions not specified
AMD Epyc 7302 Firmware: affected versions not specified
AMD Epyc 7302p Firmware: affected versions not specified
AMD Epyc 7303 Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7303p Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7313 Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7313p Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7343 Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
AMD Epyc 7351 Firmware: affected versions not specified
AMD Epyc 7351p Firmware: affected versions not specified
AMD Epyc 7352 Firmware: affected versions not specified
AMD Epyc 7371 Firmware: affected versions not specified
AMD Epyc 7373x Firmware: before milanpi_1.0.0.c (fixed in milanpi_1.0.0.c)
and 44 more

Published 2023-11-14. Last modified 2026-06-17.