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CVE-2021-26371

5.5 · MEDIUM

A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure.

Published May 9, 2023EPSS 0.19%

Overview

CVE-2021-26371 is a medium-severity vulnerability. It was published on May 9, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A compromised or malicious ABL or UApp could

send a SHA256 system call to the bootloader, which may result in exposure of

ASP memory to userspace, potentially leading to information disclosure.

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-3001Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001Refwww.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001

How CyberStrike helps

Frequently asked questions

What is CVE-2021-26371?

CVE-2021-26371 is a medium-severity vulnerability. It was published on May 9, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-26371?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-26371?

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-2021-26371?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-26371 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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