What is the severity of CVE-2021-26386?

CVE-2021-26386 has been classified as high severity due to its potential for memory corruption and arbitrary code execution.

How do I fix CVE-2021-26386?

To remediate CVE-2021-26386, updating the affected AMD firmware to the latest version as recommended in the security advisory is essential.

Which AMD products are affected by CVE-2021-26386?

CVE-2021-26386 affects various AMD Ryzen and Threadripper firmware versions.

What are the risks associated with CVE-2021-26386?

Exploitation of CVE-2021-26386 can lead to system instability, memory corruption, or arbitrary code execution by unauthorized users.

When was CVE-2021-26386 disclosed?

CVE-2021-26386 was disclosed on March 16, 2021, highlighting vulnerabilities that could be exploited by compromised applications.

Vulnerability/
CVE-2021-26386

high

7.8

CWE

787

10/5/2022

3/8/2024

CVE-2021-26386

First published: Tue May 10 2022(Updated: )

A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code execution.

Credit: psirt@amd.com

Affected Software	Affected Version	How to fix
AMD Ryzen 3 2200U Firmware
AMD Ryzen 3 2200U Firmware
AMD Ryzen 3 2300U Firmware
AMD Ryzen 3 2300U
AMD Ryzen 3 3100 Firmware
AMD Ryzen 3 3100 Firmware
AMD Ryzen 3 3300G Firmware
AMD Ryzen 3 3300G Firmware
AMD Ryzen 3 3300X Firmware
AMD Ryzen 3 3300X Firmware
AMD Ryzen 3 5125C Firmware
AMD Ryzen 3 5125C
AMD Ryzen 3 5400U Firmware
AMD Ryzen 3 5400U
amd ryzen 3 5425c firmware
amd ryzen 3 5425c
AMD Ryzen 3 5425U
AMD Ryzen 3 5425U
AMD Ryzen 3 5300G Firmware
AMD Ryzen 3 5300G
AMD Ryzen 3 5300GE Firmware
AMD Ryzen 5300GE Firmware
AMD Ryzen 5600G Firmware
AMD Ryzen 5600G Firmware
AMD Ryzen 5 5600GE Firmware
AMD Ryzen 5 5600GE
AMD Ryzen 5600X Firmware
AMD Ryzen 5 5600X
AMD Ryzen 5 5700G Firmware
AMD Ryzen 5 5700G
AMD Ryzen 5 5700GE Firmware
AMD Ryzen 5 5700GE
AMD Ryzen 5800X
AMD Ryzen 7 5800X
AMD Ryzen 7 5800X3D Firmware
AMD Ryzen 7 5800X3D
AMD Ryzen 9 5900X Firmware
AMD Ryzen 9 5900X
AMD Ryzen 9 5950X
AMD Ryzen 9 5950X
AMD Ryzen 5 2500U Firmware
AMD Ryzen 5 2500U
AMD Ryzen 5 2600X
AMD Ryzen 5 2600
AMD Ryzen 5 2600H Firmware
AMD Ryzen 5 2600H
AMD Ryzen 5 2600X
AMD Ryzen 5 2600X
AMD Ryzen 5 Pro 3400G Firmware
AMD Ryzen 5 Pro 3400G
AMD Ryzen 5 3450G Firmware
AMD Ryzen 5 3450G Firmware
AMD Ryzen 5 3600 firmware
AMD Ryzen 5 3600
AMD Ryzen 5 3600X Firmware
AMD Ryzen 5 3600X Firmware
AMD Ryzen 5 5560U Firmware
AMD Ryzen 5 5560U Firmware
AMD Ryzen 5 5600H Firmware
AMD Ryzen 5 5600H
AMD Ryzen 5 5600HS Firmware
AMD Ryzen 5 5600HS
AMD Ryzen 5 5600U Firmware
AMD Ryzen 5 5600U
AMD Ryzen 5 5600X Firmware
AMD Ryzen 5 5600X Firmware
amd ryzen 5 5625c firmware
amd ryzen 5 5625c
AMD Ryzen 5 5625U Firmware
AMD Ryzen 5 5625U Firmware
AMD Ryzen 5 5700G Firmware
AMD Ryzen 5 5700G
AMD Ryzen 5 5700GE Firmware
AMD Ryzen 5 5700GE
AMD Ryzen 7 2700 Firmware
AMD Ryzen 7 2700 Firmware
AMD Ryzen 7 2700U Firmware
AMD Ryzen 7 2700U Firmware
AMD Ryzen 7 2700X
AMD Ryzen 7 2700X
AMD Ryzen 7 2800H Firmware
AMD Ryzen 7 2800H Firmware
AMD Ryzen 7 3700X Firmware
AMD Ryzen 7 3700X Firmware
AMD Ryzen 7 3800XT Firmware
AMD Ryzen 7 3800X
AMD Ryzen 7 5800H Firmware
AMD Ryzen 7 5800H Firmware
AMD Ryzen 7 5800HS Firmware
AMD Ryzen 7 5800HS Firmware
AMD Ryzen 7 5800U Firmware
AMD Ryzen 7 5800U Firmware
amd ryzen 7 5825c firmware
amd ryzen 7 5825c
AMD Ryzen 7 5825U Firmware
AMD Ryzen 7 5825U Firmware
AMD Ryzen 9 3900X
AMD Ryzen 9 3900X
AMD Ryzen 9 3950x firmware
AMD Ryzen 9 3950x firmware
AMD Ryzen 9 5900HS Firmware
AMD Ryzen 9 5900HS Firmware
AMD Ryzen 9 5900HX Firmware
AMD Ryzen 9 5900HX
AMD Ryzen 9 5980HS Firmware
AMD Ryzen 9 5980HS Firmware
AMD Ryzen 9 5980HX
AMD Ryzen 9 5980HX Firmware
AMD Ryzen Threadripper 2920X Firmware
AMD Ryzen Threadripper 2920X Firmware
AMD Ryzen Threadripper 2950X Firmware
AMD Ryzen Threadripper 2950X Firmware
AMD Ryzen Threadripper 2970WX Firmware
AMD Ryzen Threadripper 2970WX Firmware
AMD Ryzen Threadripper 2990WX
AMD Ryzen Threadripper 2990WX
AMD Ryzen Threadripper 3960X Firmware
AMD Ryzen Threadripper 3960X Firmware
AMD Ryzen Threadripper 3970X Firmware
AMD Ryzen Threadripper 3970X Firmware
AMD Ryzen Threadripper 3990X
AMD Ryzen Threadripper 3990X
AMD Ryzen Threadripper Pro 3945WX Firmware
AMD Ryzen Threadripper Pro 3945WX Firmware
AMD Ryzen Threadripper Pro 3955WX Firmware
AMD Ryzen Threadripper Pro 3955WX
AMD Ryzen Threadripper Pro 3975WX Firmware
AMD Ryzen Threadripper Pro 3975WX Firmware
AMD Ryzen Threadripper Pro 3995WX Firmware
AMD Ryzen Threadripper Pro 3995WX
AMD Ryzen Threadripper Pro 5945WX Firmware
AMD Ryzen Threadripper Pro 5945WX Firmware
AMD Ryzen Threadripper Pro 5955WX Firmware
AMD Ryzen Threadripper Pro 5955WX Firmware
AMD Ryzen Threadripper Pro 5965WX Firmware
AMD Ryzen Threadripper Pro 5965WX Firmware
AMD Ryzen Threadripper Pro 5975WX Firmware
AMD Ryzen Threadripper PRO 5975WX
AMD Ryzen Threadripper Pro 5995WX Firmware
AMD Ryzen Threadripper Pro 5995WX

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Reference Links

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027

Frequently Asked Questions

What is the severity of CVE-2021-26386?
CVE-2021-26386 has been classified as high severity due to its potential for memory corruption and arbitrary code execution.
How do I fix CVE-2021-26386?
To remediate CVE-2021-26386, updating the affected AMD firmware to the latest version as recommended in the security advisory is essential.
Which AMD products are affected by CVE-2021-26386?
CVE-2021-26386 affects various AMD Ryzen and Threadripper firmware versions.
What are the risks associated with CVE-2021-26386?
Exploitation of CVE-2021-26386 can lead to system instability, memory corruption, or arbitrary code execution by unauthorized users.
When was CVE-2021-26386 disclosed?
CVE-2021-26386 was disclosed on March 16, 2021, highlighting vulnerabilities that could be exploited by compromised applications.