medium
5.5
CWE
459
Advisory Published
Updated

CVE-2021-46766

First published: Tue Nov 14 2023(Updated: )

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.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
All of
AMD EPYC 9654P Firmware<genoapi_1.0.0.4
AMD EPYC 9654P
All of
AMD EPYC 9654 firmware<genoapi_1.0.0.4
AMD EPYC 9654 firmware
All of
AMD EPYC 9634 Firmware<genoapi_1.0.0.4
AMD EPYC 9634 Firmware
All of
AMD EPYC 9554P Firmware<genoapi_1.0.0.4
AMD EPYC 9554P Firmware
All of
AMD EPYC 9554 Firmware<genoapi_1.0.0.4
AMD EPYC 9554
All of
AMD EPYC 9534 Firmware<genoapi_1.0.0.4
AMD EPYC 9534
All of
AMD Epyc 9474F Firmware<genoapi_1.0.0.4
AMD Epyc 9474F Firmware
All of
AMD EPYC 9454P Firmware<genoapi_1.0.0.4
AMD EPYC 9454P
All of
AMD EPYC 9454P Firmware<genoapi_1.0.0.4
AMD EPYC 9454P
All of
AMD EPYC 9374F Firmware<genoapi_1.0.0.4
AMD EPYC 9374F Firmware
All of
AMD EPYC 9354P Firmware<genoapi_1.0.0.4
AMD EPYC 9354P
All of
AMD EPYC 9354 Firmware<genoapi_1.0.0.4
AMD EPYC 9354 Firmware
All of
AMD EPYC 9334 firmware<genoapi_1.0.0.4
AMD EPYC 9334 firmware
All of
AMD EPYC 9274F Firmware<genoapi_1.0.0.4
AMD EPYC 9274F Firmware
All of
AMD EPYC 9254 Firmware<genoapi_1.0.0.4
AMD EPYC 9254
All of
AMD EPYC 9224 Firmware<genoapi_1.0.0.4
AMD EPYC 9224
All of
AMD EPYC 9174F Firmware<genoapi_1.0.0.4
AMD EPYC 9174F
All of
AMD EPYC 9124 Firmware<genoapi_1.0.0.4
AMD EPYC 9124 Firmware
All of
AMD EPYC 9684X Firmware<genoapi_1.0.0.4
AMD EPYC 9684X Firmware
All of
AMD EPYC 9384X Firmware<genoapi_1.0.0.4
AMD EPYC 9384X
All of
AMD EPYC 9184X firmware<genoapi_1.0.0.4
AMD EPYC 9184X
All of
Amd Epyc Server Firmware<genoapi_1.0.0.4
AMD EPYC 9754 Firmware
All of
AMD EPYC 9754S Firmware<genoapi_1.0.0.4
AMD Epyc 9754S
All of
AMD EPYC 9734 Firmware<genoapi_1.0.0.4
AMD EPYC 9734 Firmware
All of
AMD Ryzen Threadripper Pro 3995WX Firmware<chagallwspi-swrx8_1.0.0.5
AMD Ryzen Threadripper Pro 3995WX
All of
AMD Ryzen Threadripper Pro 3975WX Firmware<chagallwspi-swrx8_1.0.0.5
AMD Ryzen Threadripper Pro 3975WX Firmware
All of
AMD Ryzen Threadripper Pro 3955WX Firmware<chagallwspi-swrx8_1.0.0.5
AMD Ryzen Threadripper Pro 3955WX
All of
AMD Ryzen Threadripper Pro 3945WX Firmware<chagallwspi-swrx8_1.0.0.5
AMD Ryzen Threadripper Pro 3945WX Firmware

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-46766?

    The severity of CVE-2021-46766 is considered high due to potential exposure of sensitive data.

  • How do I fix CVE-2021-46766?

    To fix CVE-2021-46766, users should update the firmware to the latest version provided by AMD.

  • What types of systems are affected by CVE-2021-46766?

    CVE-2021-46766 affects several AMD EPYC and Ryzen Threadripper Pro firmware versions.

  • What could happen if CVE-2021-46766 is exploited?

    Exploitation of CVE-2021-46766 could result in a loss of confidentiality by exposing secret keys to attackers.

  • Is there a workaround for CVE-2021-46766?

    Currently, the recommended approach for CVE-2021-46766 is to apply the firmware update, as no specific workaround is documented.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203