CVE-2020-12061

CRITICAL

Nitrokey FIDO U2F Firmware < 1.1 - Insufficiently Protected Credentials via Plaintext Communication

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Exploit, Third Party Advisory x_refsource_misc
https://eprint.iacr.org/2021/640.pdf
Third Party Advisory x_refsource_misc
https://cwe.mitre.org/data/definitions/523.html

Scores

CVSS v3 9.8
EPSS 0.0185
EPSS Percentile 76.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-522
Status published
Products (1)
nitrokey/fido_u2f_firmware < 1.1
Published May 21, 2021
Tracked Since Feb 18, 2026