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TI-2020-09715 Aliases CVE-2020-12061GHSA-8743-v63g-3f38

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

Priority MEDIUM 46CWE-522Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-522.

Summary

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.

Why it matters now

EPSS 0.01853 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:nitrokey:fido_u2f_firmware:*:*:*:*:*:*:*:*up to 1.1VulnerableNitrokey
cpe:2.3:h:nitrokey:fido_u2f:-:*:*:*:*:*:*:*not specified by NVDRunning onNitrokey
  • cpe:2.3:o:nitrokey:fido_u2f_firmware:*:*:*:*:*:*:*:* Versions up to 1.1 Vulnerable ·Nitrokey
  • cpe:2.3:h:nitrokey:fido_u2f:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Nitrokey

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-12061
  2. 2026-10-03 Alias added: GHSA-8743-v63g-3f38

References

Exploit 1

Patch 1

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences