What’s Vulnerable › Vulnerabilities
CVE-2021-46756
- Severity: critical (CVSS 9.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% 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-20
Description
Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or invalid syscall to the bootloader resulting in a potential denial of service and loss of integrity.
Affected products
- AMD Epyc 7232P Firmware: romepi_1.0.0.e
- AMD Epyc 7251 Firmware: naplespi_1.0.0.j
- AMD Epyc 7252 Firmware: romepi_1.0.0.e
- AMD Epyc 7261 Firmware: naplespi_1.0.0.j
- AMD Epyc 7262 Firmware: romepi_1.0.0.e
- AMD Epyc 7272 Firmware: romepi_1.0.0.e
- AMD Epyc 7281 Firmware: naplespi_1.0.0.j
- AMD Epyc 7282 Firmware: romepi_1.0.0.e
- AMD Epyc 72F3 Firmware: milanpi_1.0.0.9
- AMD Epyc 7301 Firmware: naplespi_1.0.0.j
- AMD Epyc 7302 Firmware: romepi_1.0.0.e
- AMD Epyc 7302P Firmware: romepi_1.0.0.e
- AMD Epyc 7313 Firmware: milanpi_1.0.0.9
- AMD Epyc 7313P Firmware: milanpi_1.0.0.9
- AMD Epyc 7343 Firmware: milanpi_1.0.0.9
- AMD Epyc 7351 Firmware: naplespi_1.0.0.j
- AMD Epyc 7351P Firmware: naplespi_1.0.0.j
- AMD Epyc 7352 Firmware: romepi_1.0.0.e
- AMD Epyc 7371 Firmware: naplespi_1.0.0.j
- AMD Epyc 7373X Firmware: milanpi_1.0.0.9
- AMD Epyc 73F3 Firmware: milanpi_1.0.0.9
- AMD Epyc 7401 Firmware: naplespi_1.0.0.j
- AMD Epyc 7401P Firmware: naplespi_1.0.0.j
- AMD Epyc 7402 Firmware: romepi_1.0.0.e
- AMD Epyc 7402P Firmware: romepi_1.0.0.e
- AMD Epyc 7413 Firmware: milanpi_1.0.0.9
- AMD Epyc 7443 Firmware: milanpi_1.0.0.9
- AMD Epyc 7443P Firmware: milanpi_1.0.0.9
- AMD Epyc 7451 Firmware: naplespi_1.0.0.j
- AMD Epyc 7452 Firmware: romepi_1.0.0.e
References
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
Get alerted when CVE-2021-46756 or the next vulnerability affects your stack