What’s Vulnerable › Vulnerabilities

CVE-2023-20520

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-09 · updated 2026-06-17
• Weakness: CWE-787

Description

Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.

Affected products

• AMD Epyc 7232P Firmware: romepi_1.0.0.d
• AMD Epyc 7251 Firmware: naplespi_1.0.0.h
• AMD Epyc 7252 Firmware: romepi_1.0.0.d
• AMD Epyc 7261 Firmware: naplespi_1.0.0.h
• AMD Epyc 7262 Firmware: romepi_1.0.0.d
• AMD Epyc 7272 Firmware: romepi_1.0.0.d
• AMD Epyc 7281 Firmware: naplespi_1.0.0.h
• AMD Epyc 7282 Firmware: romepi_1.0.0.d
• AMD Epyc 72F3 Firmware: milanpi_1.0.0.5
• AMD Epyc 7301 Firmware: naplespi_1.0.0.h
• AMD Epyc 7302 Firmware: romepi_1.0.0.d
• AMD Epyc 7302P Firmware: romepi_1.0.0.d
• AMD Epyc 7313 Firmware: milanpi_1.0.0.5
• AMD Epyc 7313P Firmware: milanpi_1.0.0.5
• AMD Epyc 7343 Firmware: milanpi_1.0.0.5
• AMD Epyc 7351 Firmware: naplespi_1.0.0.h
• AMD Epyc 7351P Firmware: naplespi_1.0.0.h
• AMD Epyc 7352 Firmware: romepi_1.0.0.d
• AMD Epyc 7371 Firmware: naplespi_1.0.0.h
• AMD Epyc 7373X Firmware: milanpi_1.0.0.5
• AMD Epyc 73F3 Firmware: milanpi_1.0.0.5
• AMD Epyc 7401 Firmware: naplespi_1.0.0.h
• AMD Epyc 7401P Firmware: naplespi_1.0.0.h
• AMD Epyc 7402 Firmware: romepi_1.0.0.d
• AMD Epyc 7402P Firmware: romepi_1.0.0.d
• AMD Epyc 7413 Firmware: milanpi_1.0.0.5
• AMD Epyc 7443 Firmware: milanpi_1.0.0.5
• AMD Epyc 7443P Firmware: milanpi_1.0.0.5
• AMD Epyc 7451 Firmware: naplespi_1.0.0.h
• AMD Epyc 7452 Firmware: romepi_1.0.0.d

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001

Get alerted when CVE-2023-20520 or the next vulnerability affects your stack