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HIGH · 7.8

CVE-2021-26386

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.

Vulnerability Description

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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AmdRyzen 3 2200U Firmware-
AmdRyzen 3 2200U-
AmdRyzen 3 2300U Firmware-
AmdRyzen 3 2300U-
AmdRyzen 3 3100 Firmware-
AmdRyzen 3 3100-
AmdRyzen 3 3300G Firmware-
AmdRyzen 3 3300G-
AmdRyzen 3 3300X Firmware-
AmdRyzen 3 3300X-
AmdRyzen 3 5125C Firmware-
AmdRyzen 3 5125C-
AmdRyzen 3 5400U Firmware-
AmdRyzen 3 5400U-
AmdRyzen 3 5425C Firmware-
AmdRyzen 3 5425C-
AmdRyzen 3 5425U Firmware-
AmdRyzen 3 5425U-
AmdRyzen 5300G Firmware-
AmdRyzen 5300G-

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2021-26386?

CVE-2021-26386 is a vulnerability with a CVSS score of 7.8 (HIGH). 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.

How severe is CVE-2021-26386?

CVE-2021-26386 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26386?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Ryzen 3 2200U Firmware, Amd Ryzen 3 2200U, Amd Ryzen 3 2300U Firmware, Amd Ryzen 3 2300U, Amd Ryzen 3 3100 Firmware.