CVE-2021-26345: AMD Epyc 7203 Firmware

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

Affected products

AMD Epyc 7203 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7203p Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7232p Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7252 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7262 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7272 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7282 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 72f3 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7302 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7302p Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7303 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7303p Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7313 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7313p Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7343 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7352 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7373x Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 73f3 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7402 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7402p Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7413 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7443 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7443p Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
AMD Epyc 7452 Firmware: before romepi_1.0.0.f (fixed in romepi_1.0.0.f)
AMD Epyc 7453 Firmware: before milanpi_1.0.0.a (fixed in milanpi_1.0.0.a)
and 65 more

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