CVE-2021-46779

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-01-11 · updated 2026-06-17
Weakness: CWE-787

Description

Insufficient input validation in SVC_ECC_PRIMITIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential loss of integrity and availability.

Affected products

AMD Milanpi Firmware: before 1.0.0.4 — fixed in 1.0.0.4
AMD Naplespi Firmware: before 1.0.0.g — fixed in 1.0.0.g
AMD Romepi Firmware: before 1.0.0.c — fixed in 1.0.0.c

How to fix

Upgrade to a fixed version: AMD Milanpi Firmware 1.0.0.4; AMD Naplespi Firmware 1.0.0.g; AMD Romepi Firmware 1.0.0.c. Check the vendor advisory for mitigations.

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

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