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CVE-2020-12061

9.8 · CRITICAL

An issue was discovered in Nitrokey FIDO U2F firmware through 1.1.

Published May 21, 2021CWE-522EPSS 1.85%

Overview

CVE-2020-12061 is a critical-severity vulnerability. It was published on May 21, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in Nitrokey FIDO U2F firmware through 1.1. Communication between the microcontroller and the secure element transmits credentials in plain. This allows an adversary to eavesdrop the communication and derive the secrets stored in the microcontroller. As a result, the attacker is able to arbitrarily manipulate the firmware of the microcontroller.

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

Refcwe.mitre.org/data/definitions/523.htmlRefeprint.iacr.org/2021/640.pdfGitHubgithub.com/Nitrokey/nitrokey-fido-u2f-firmware/commits/masterGitHubgithub.com/Nitrokey/nitrokey-fido-u2f-firmware/releasesRefcwe.mitre.org/data/definitions/523.htmlRefeprint.iacr.org/2021/640.pdfGitHubgithub.com/Nitrokey/nitrokey-fido-u2f-firmware/commits/masterGitHubgithub.com/Nitrokey/nitrokey-fido-u2f-firmware/releases

How CyberStrike helps

Frequently asked questions

What is CVE-2020-12061?

CVE-2020-12061 is a critical-severity vulnerability. It was published on May 21, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2020-12061?

This vulnerability has a CVSS 3.1 base score of 9.8, 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-2020-12061?

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-2020-12061?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-12061 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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