CVE-2025-66016

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 94% 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, secondary
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.3Exploit: NoneExposed: 0

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

CGGMP24 is a state-of-art ECDSA TSS protocol that supports 1-round signing (requires 3 preprocessing rounds), identifiable abort, and a key refresh protocol. Prior to version 0.6.3, there is a missing check in the ZK proof that enables an attack in which single malicious signer can reconstruct full private key. This issue has been patched in version 0.6.3, for full mitigation it is recommended to upgrade to cggmp24 version 0.7.0-alpha.2 as it contains more security checks.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
6.3%
KEV
Not listed

Published

November 25, 2025

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
Patch available. Sources: github.
generic

CGGMP21 Vulnerabilities Patched and Explained — DFNS

https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained
github Patch Available

Missing check in the ZK proof used in CGGMP21 · Advisory · LFDT-Lockness/cggmp21 · GitHub

https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-m95p-425x-x889

Affected Packages

(2 across 1 ecosystem)
crates.io(2)
PackageVulnerable rangeFixed inDependents
cggmp21—0.6.3—
cggmp24—0.7.0-alpha.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 43× 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 113 total refreshes for this CVE.

  1. 2026-07-23 03:01 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:30 UTCEPSS rescore
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  8. 2026-07-16 17:02 UTCEPSS rescore
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  11. 2026-07-15 01:59 UTCEPSS rescore
  12. 2026-07-15 01:59 UTCEPSS rescore
  13. 2026-07-14 05:25 UTCOSV refresh
  14. 2026-07-13 22:29 UTCEPSS rescore
  15. 2026-07-13 06:12 UTCEPSS rescore
  16. 2026-07-12 05:46 UTCEPSS rescore
  17. 2026-07-11 08:27 UTCEPSS rescore
  18. 2026-07-09 19:09 UTCEPSS rescore
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  1. 2026-07-04 06:31 UTCEPSS rescore
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  3. 2026-07-01 15:06 UTCEPSS rescore
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  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-29 14:06 UTCEPSS rescore
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  8. 2026-06-28 14:07 UTCEPSS rescore
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  10. 2026-06-28 04:56 UTCEPSS rescore
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  12. 2026-06-27 03:08 UTCEPSS rescore
  13. 2026-06-26 02:46 UTCOSV refresh
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-24 14:04 UTCEPSS rescore
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  17. 2026-06-23 21:32 UTCEPSS rescore
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  19. 2026-06-22 14:25 UTCEPSS rescore
  20. 2026-06-21 14:56 UTCEPSS rescore
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 01:59 UTCEPSS rescore
  23. 2026-06-21 01:59 UTCEPSS rescore
  24. 2026-06-19 19:25 UTCEPSS rescore
  25. 2026-06-19 19:25 UTCEPSS rescore
  26. 2026-06-18 17:52 UTCEPSS rescore
  27. 2026-06-18 17:52 UTCEPSS rescore
  28. 2026-06-17 17:52 UTCEPSS rescore
  29. 2026-06-16 17:52 UTCEPSS rescore
  30. 2026-06-15 17:48 UTCEPSS rescore
  31. 2026-06-15 17:48 UTCEPSS rescore
  32. 2026-06-14 23:18 UTCEPSS rescore
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  37. 2026-06-10 22:18 UTCEPSS rescore
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  39. 2026-06-10 13:22 UTCEPSS rescore
  40. 2026-06-08 15:17 UTCEG score recompute▲ 9.30
  41. 2026-06-08 14:17 UTCEPSS rescore
  42. 2026-06-08 14:16 UTCEPSS rescore
  43. 2026-06-07 15:24 UTCEPSS rescore
  44. 2026-06-07 15:24 UTCEPSS rescore
  45. 2026-06-06 13:47 UTCEPSS rescore
  46. 2026-06-06 13:47 UTCEPSS rescore
  47. 2026-06-05 22:46 UTCEPSS rescore
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  49. 2026-06-05 06:10 UTCEPSS rescore
  50. 2026-06-05 06:10 UTCEPSS rescore
  51. 2026-06-04 13:12 UTCEPSS rescore
  52. 2026-06-04 13:12 UTCEPSS rescore
  53. 2026-06-02 20:13 UTCEPSS rescore
  54. 2026-06-02 20:12 UTCEPSS rescore
  55. 2026-06-02 04:09 UTCOSV refresh
  56. 2026-06-01 13:51 UTCEPSS rescore
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  58. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-31 00:16 UTCEPSS rescore
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  62. 2026-05-29 13:44 UTCEPSS rescore
  63. 2026-05-28 13:44 UTCEPSS rescore
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  66. 2026-05-27 13:40 UTCEPSS rescore
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  73. 2026-05-26 07:18 UTCEPSS rescore
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  75. 2026-05-26 07:18 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-66016?
CVE-2025-66016 is a critical vulnerability published on November 25, 2025. CGGMP24 is a state-of-art ECDSA TSS protocol that supports 1-round signing (requires 3 preprocessing rounds), identifiable abort, and a key refresh protocol. Prior to version 0.6.3, there is a missing check in the ZK proof that enables an attack in which single malicious signer can reconstruct full…
When was CVE-2025-66016 disclosed?
CVE-2025-66016 was first published in the National Vulnerability Database on November 25, 2025, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-66016 actively exploited?
CVE-2025-66016 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-66016?
CVE-2025-66016 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2025-66016?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-66016, 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.

Dependency Blast Radius

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