Critical severity9.8NVD Advisory· Published May 21, 2021· Updated Jun 17, 2026
CVE-2020-12061
CVE-2020-12061
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.
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Affected products
2- Nitrokey/FIDO U2F firmwaredescription
- Range: <=1.1
Patches
Vulnerability mechanics
References
4- github.com/Nitrokey/nitrokey-fido-u2f-firmware/commits/masternvdPatchThird Party Advisory
- eprint.iacr.org/2021/640.pdfnvdExploitThird Party Advisory
- cwe.mitre.org/data/definitions/523.htmlnvdThird Party Advisory
- github.com/Nitrokey/nitrokey-fido-u2f-firmware/releasesnvdThird Party Advisory
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