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CVE-2021-46772

3.9 · LOW

Insufficient input validation in the ABL may allow a privileged attacker with access to the BIOS menu or UEFI shell to tamper with the structure headers in SPI ROM causing an out of bounds memory r…

Published Aug 13, 2024CWE-125EPSS 0.18%

Overview

CVE-2021-46772 is a low-severity vulnerability. It was published on August 13, 2024 and has a CVSS 3.1 base score of 3.9 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Insufficient input validation in the ABL may allow a privileged

attacker with access to the BIOS menu or UEFI shell to tamper with the

structure headers in SPI ROM causing an out of bounds memory read and write,

potentially resulting in memory corruption or denial of service.

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/resources/product-security/bulletin/amd-sb-3003.htmlRefwww.amd.com/en/resources/product-security/bulletin/amd-sb-4004.htmlRefwww.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46772?

CVE-2021-46772 is a low-severity vulnerability. It was published on August 13, 2024 and has a CVSS 3.1 base score of 3.9 (LOW).

How severe is CVE-2021-46772?

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-46772?

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-2021-46772?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46772 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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