CVE-2021-46758: AMD Ryzen 3 4300u Firmware

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

Affected products

AMD Ryzen 3 4300u Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 3 5125c Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 3 5300g Firmware: before comboam4v2_pi_1.2.0.8 (fixed in comboam4v2_pi_1.2.0.8)
AMD Ryzen 3 5300ge Firmware: before comboam4v2_pi_1.2.0.8 (fixed in comboam4v2_pi_1.2.0.8)
AMD Ryzen 3 5300u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 3 5400u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 3 5425u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 3 7335u Firmware: before rembrandtpi-fp7_1.0.0.5 (fixed in rembrandtpi-fp7_1.0.0.5)
AMD Ryzen 3 Pro 7330u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 4500u Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 5 4600h Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 5 4600hs Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 5 4600u Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 5 4680u Firmware: before renoirpi-fp6_1.0.0.a (fixed in renoirpi-fp6_1.0.0.a)
AMD Ryzen 5 5500h Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5500u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5560u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5600g Firmware: before comboam4v2_pi_1.2.0.8 (fixed in comboam4v2_pi_1.2.0.8)
AMD Ryzen 5 5600ge Firmware: before comboam4v2_pi_1.2.0.8 (fixed in comboam4v2_pi_1.2.0.8)
AMD Ryzen 5 5600h Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5600hs Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5600u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 5625u Firmware: before cezannepi-fp6_1.0.0.c (fixed in cezannepi-fp6_1.0.0.c)
AMD Ryzen 5 6600h Firmware: before rembrandtpi-fp7_1.0.0.5 (fixed in rembrandtpi-fp7_1.0.0.5)
AMD Ryzen 5 6600hs Firmware: before rembrandtpi-fp7_1.0.0.5 (fixed in rembrandtpi-fp7_1.0.0.5)
and 36 more

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