CVE-2025-25201

MEDIUMNVD 4.04.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.0 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 compromise of the integrity of the data stored in the application. An attacker without access to the proper administration key would be able to generate new keys and overwrite certificates. Such an attacker would not be able to read-out or extract existing private data, nor would they be able to gain access to cryptographic operations that would normally require PIN-based authentication. The issue is fixed in piv-authenticator 0.3.9, and in Nitrokey's firmware 1.8.1.

CVSS v3
4.0
EG Score
4.0(medium)
EG Risk
18(Track)
EG Risk 18/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity40% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

February 12, 2025

Last Modified

April 15, 2026

References (3)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 129 total refreshes for this CVE.

  1. 2026-07-30 16:27 UTCEPSS rescore
  2. 2026-07-30 01:29 UTCEPSS rescore
  3. 2026-07-28 15:35 UTCEPSS rescore
  4. 2026-07-28 01:55 UTCOSV refresh
  5. 2026-07-27 14:12 UTCEPSS rescore
  6. 2026-07-26 14:53 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
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  9. 2026-07-23 02:51 UTCEG score recompute
  10. 2026-07-22 14:07 UTCEPSS rescore
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  12. 2026-07-21 15:24 UTCEPSS rescore
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  20. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-07-13 06:12 UTCEPSS rescore
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  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 08:26 UTCEPSS rescore
  6. 2026-07-10 18:22 UTCOSV refresh
  7. 2026-07-09 19:09 UTCEPSS rescore
  8. 2026-07-08 15:14 UTCEPSS rescore
  9. 2026-07-07 13:45 UTCEPSS rescore
  10. 2026-07-06 02:22 UTCEPSS rescore
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  20. 2026-06-28 04:55 UTCEPSS rescore
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  22. 2026-06-27 03:08 UTCEPSS rescore
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  24. 2026-06-25 13:49 UTCEPSS rescore
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  26. 2026-06-24 14:04 UTCEPSS rescore
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  28. 2026-06-23 21:32 UTCEPSS rescore
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  30. 2026-06-22 14:25 UTCEPSS rescore
  31. 2026-06-22 14:25 UTCEPSS rescore
  32. 2026-06-22 02:26 UTCOSV refresh
  33. 2026-06-21 14:56 UTCEPSS rescore
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  35. 2026-06-21 01:59 UTCEPSS rescore
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  37. 2026-06-19 19:25 UTCEPSS rescore
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  39. 2026-06-17 17:52 UTCEPSS rescore
  40. 2026-06-16 17:52 UTCEPSS rescore
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  42. 2026-06-15 17:48 UTCEPSS rescore
  43. 2026-06-14 23:17 UTCEPSS rescore
  44. 2026-06-13 22:59 UTCEPSS rescore
  45. 2026-06-12 23:11 UTCEPSS rescore
  46. 2026-06-11 13:59 UTCEPSS rescore
  47. 2026-06-10 22:18 UTCEPSS rescore
  48. 2026-06-10 13:22 UTCEPSS rescore
  49. 2026-06-08 14:16 UTCEPSS rescore
  50. 2026-06-08 14:16 UTCEPSS rescore
  51. 2026-06-07 15:24 UTCEPSS rescore
  52. 2026-06-07 15:24 UTCEPSS rescore
  53. 2026-06-06 13:47 UTCEPSS rescore
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  55. 2026-06-05 22:46 UTCEPSS rescore
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  57. 2026-06-05 06:10 UTCEPSS rescore
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  59. 2026-06-04 13:11 UTCEPSS rescore
  60. 2026-06-04 13:11 UTCEPSS rescore
  61. 2026-06-03 19:39 UTCOSV refresh
  62. 2026-06-02 20:12 UTCEPSS rescore
  63. 2026-06-02 20:12 UTCEPSS rescore
  64. 2026-06-01 13:51 UTCEPSS rescore
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  66. 2026-05-31 22:30 UTCEPSS rescore
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  68. 2026-05-31 00:16 UTCEPSS rescore
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  70. 2026-05-29 13:44 UTCEPSS rescore
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  74. 2026-05-28 13:44 UTCEPSS rescore
  75. 2026-05-27 13:40 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-25201?
CVE-2025-25201 is a medium vulnerability published on February 12, 2025. 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 compromise of the integrity of the data stored in the…
When was CVE-2025-25201 disclosed?
CVE-2025-25201 was first published in the National Vulnerability Database on February 12, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-25201 actively exploited?
CVE-2025-25201 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.3% of all scored CVEs.
What is the CVSS score of CVE-2025-25201?
CVE-2025-25201 has a CVSS v3 base score of 4.0 (NVD).
How do I remediate CVE-2025-25201?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-25201, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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