medium
4.7
CWE
1284 190
Advisory Published
Updated

CVE-2021-26347: Integer Overflow

First published: Wed May 11 2022(Updated: )

Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential denial of service.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7763 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7713 Firmware
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7663 Firmware
AMD EPYC 7643P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7643 Firmware
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 75F3 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7543 Firmware
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7513 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC Server
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 74F3 Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443P Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7443P
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7413 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 73F3 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7343 Firmware
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313P Firmware
AMD EPYC Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7313 Firmware
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 72F3 Firmware
AMD EPYC 7773X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7773X Firmware
AMD EPYC 7473X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7473X Firmware
AMD EPYC 7573X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7573X Firmware
AMD EPYC 7373X Firmware<milanpi-sp3_1.0.0.7
AMD EPYC 7373X Firmware
AMD EPYC 7002 Firmware<romepi-sp3_1.0.0.d
AMD EPYC Server
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.d
AMD EPYC 7232p firmware
AMD EPYC 7252 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7252 Firmware
AMD EPYC 7262 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7262 Firmware
AMD EPYC 7272 firmware<romepi-sp3_1.0.0.d
AMD EPYC 7272 firmware
AMD EPYC 7282 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7282 Firmware
Amd Epyc Server Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7302 Firmware
AMD EPYC 7302P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7302P Firmware
AMD EPYC Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7352 firmware
Amd Epyc Server Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7402 Firmware
AMD EPYC 7402P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7402P Firmware
AMD EPYC 7452 Firmware<romepi-sp3_1.0.0.d
AMD EPYC Server
AMD EPYC 7502 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7502 firmware
AMD EPYC 7502P Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7502P Firmware
AMD EPYC 7532 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7532 Firmware
AMD EPYC 7542 Firmware<romepi-sp3_1.0.0.d
AMD EPYC Server
AMD EPYC 7552 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7552 Firmware
AMD EPYC 7642 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7642 Firmware
AMD EPYC 7662 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7662 Firmware
AMD EPYC 7702p firmware<romepi-sp3_1.0.0.d
AMD EPYC Server
AMD EPYC 7702 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7702P
AMD EPYC 7742 Firmware<romepi-sp3_1.0.0.d
AMD EPYC Server
AMD EPYC 7F32 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7F32 Firmware
AMD EPYC 7H12 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7H12 Firmware
AMD EPYC 7F72<romepi-sp3_1.0.0.d
AMD EPYC 7F72 Firmware
AMD EPYC 7F52 Firmware<romepi-sp3_1.0.0.d
AMD EPYC 7F52 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-2021-26347?

    CVE-2021-26347 has a severity rating that indicates a potential denial of service risk due to integer overflow vulnerabilities.

  • How do I fix CVE-2021-26347?

    To fix CVE-2021-26347, you should update the affected AMD EPYC firmware to a version above milanpi-sp3_1.0.0.7.

  • Which AMD products are affected by CVE-2021-26347?

    CVE-2021-26347 affects several AMD EPYC firmware versions, primarily those prior to milanpi-sp3_1.0.0.7.

  • What are the potential impacts of CVE-2021-26347?

    The potential impacts of CVE-2021-26347 include system instability and possible service interruptions due to the integer overflow vulnerability.

  • Is there a workaround for CVE-2021-26347?

    Currently, the best workaround for CVE-2021-26347 is to ensure that all affected AMD EPYC systems are updated to the latest firmware version.

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