What is CVE-2025-25201?

CVE-2025-25201 is a medium-severity vulnerability in Nitrokey Nitrokey-3-firmware, classified under Improper Authentication. CVSS score: 4.0/10. Published 2025-02-12.

How severe is CVE-2025-25201?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Auth bypass in Nitrokey Nitrokey-3-firmware

CVE-2025-25201

Nitrokey 3 Firmware is the the firmware of Nitrokey 3 USB keys. For release 1.8.0, and test releases with PIV enabled prior to 1.8.0, the PIV application could accept invalid keys for authentication of the admin key. This could lead to com…

Vulnerability class: Broken Authentication

EPSS: 0.001 (3.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Nitrokey Nitrokey-3-firmware — versions = 1.8.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-25201?: CVE-2025-25201 is a medium-severity vulnerability in Nitrokey Nitrokey-3-firmware, classified under Improper Authentication. CVSS score: 4.0/10. Published 2025-02-12.
How severe is CVE-2025-25201?: Medium severity. CVSS v3 base score is 4.0 out of 10.