What’s Vulnerable › Vulnerabilities

CVE-2021-46766

• Severity: medium (CVSS 5.5 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: 2023-11-14 · updated 2026-06-17
• Weakness: CWE-459

Description

Improper clearing of sensitive data in the ASP Bootloader may expose secret keys to a privileged attacker accessing ASP SRAM, potentially leading to a loss of confidentiality.

Affected products

• AMD Epyc 9124 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9174F Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9184X Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9224 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9254 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9274F Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9334 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9354 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9354P Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9374F Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9384X Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9454 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9454P Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9474F Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9534 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9554 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9554P Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9634 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9654 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9654P Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9684X Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9734 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9754 Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Epyc 9754S Firmware: before genoapi_1.0.0.4 — fixed in genoapi_1.0.0.4
• AMD Ryzen Threadripper Pro 3945Wx Firmware: before chagallwspi-swrx8_1.0.0.5 — fixed in chagallwspi-swrx8_1.0.0.5
• AMD Ryzen Threadripper Pro 3955Wx Firmware: before chagallwspi-swrx8_1.0.0.5 — fixed in chagallwspi-swrx8_1.0.0.5
• AMD Ryzen Threadripper Pro 3975Wx Firmware: before chagallwspi-swrx8_1.0.0.5 — fixed in chagallwspi-swrx8_1.0.0.5
• AMD Ryzen Threadripper Pro 3995Wx Firmware: before chagallwspi-swrx8_1.0.0.5 — fixed in chagallwspi-swrx8_1.0.0.5

How to fix

Upgrade to a fixed version: AMD Epyc 9124 Firmware genoapi_1.0.0.4; AMD Epyc 9174F Firmware genoapi_1.0.0.4; AMD Epyc 9184X Firmware genoapi_1.0.0.4; AMD Epyc 9224 Firmware genoapi_1.0.0.4; AMD Epyc 9254 Firmware genoapi_1.0.0.4; AMD Epyc 9274F Firmware genoapi_1.0.0.4; AMD Epyc 9334 Firmware genoapi_1.0.0.4; AMD Epyc 9354 Firmware genoapi_1.0.0.4; AMD Epyc 9354P Firmware genoapi_1.0.0.4; AMD Epyc 9374F Firmware genoapi_1.0.0.4; AMD Epyc 9384X Firmware genoapi_1.0.0.4; AMD Epyc 9454 Firmware genoapi_1.0.0.4. Check the vendor advisory for mitigations.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001

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