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CVE-2021-39298

8.8 · HIGH

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 use…

Published Feb 16, 2022EPSS 0.37%

Overview

CVE-2021-39298 is a high-severity vulnerability. It was published on February 16, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-1027Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-1027Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39298?

CVE-2021-39298 is a high-severity vulnerability. It was published on February 16, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-39298?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-39298?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-39298?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39298 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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