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CVE-2021-46839

9.1 · CRITICAL

The HW_KEYMASTER module has a vulnerability of missing bounds check on length.Successful exploitation of this vulnerability may cause malicious construction of data, which results in out-of-bounds…

Published Oct 14, 2022CWE-125EPSS 0.52%

Overview

CVE-2021-46839 is a critical-severity vulnerability. It was published on October 14, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The HW_KEYMASTER module has a vulnerability of missing bounds check on length.Successful exploitation of this vulnerability may cause malicious construction of data, which results in out-of-bounds access.

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

Refconsumer.huawei.com/en/support/bulletin/2022/10/Refdevice.harmonyos.com/en/docs/security/update/security-bulletins-phones-202210-0000001416095697Refconsumer.huawei.com/en/support/bulletin/2022/10/Refdevice.harmonyos.com/en/docs/security/update/security-bulletins-phones-202210-0000001416095697

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46839?

CVE-2021-46839 is a critical-severity vulnerability. It was published on October 14, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2021-46839?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-46839?

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-2021-46839?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46839 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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