CVE-2021-39298

Description

A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware.

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.03%

Vendor Advisory amd.com

Affected: AMD 2nd Gen EPYC

Affected: AMD 3rd Gen EPYC

Affected: AMD Ryzen 2000 Series

Affected: AMD Ryzen 3000 Series

Affected: AMD Ryzen 5000 Series

References

Link	Tags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032	vendor advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1027

Frequently Asked Questions

What is the severity of CVE-2021-39298?: CVE-2021-39298 has been scored as a high severity vulnerability.
How to fix CVE-2021-39298?: To fix CVE-2021-39298, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39298 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-39298 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39298?: CVE-2021-39298 affects AMD 2nd Gen EPYC, AMD 3rd Gen EPYC, AMD Ryzen 2000 Series, AMD Ryzen 3000 Series , AMD Ryzen 5000 Series .

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