{"cve":"CVE-2025-14505","nvd":{"published":"2026-01-08T21:15:42.023","modified":"2026-06-17T08:36:02.050","status":"Deferred","description":"The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of 'k' (as computed based on step 3.2 of  RFC 6979 https://datatracker.ietf.org/doc/html/rfc6979 ) has leading zeros and is susceptible to cryptanalysis, which can lead to secret key exposure. This happens, because the byte-length of 'k' is incorrectly computed, resulting in its getting truncated during the computation. Legitimate transactions or communications will be broken as a result. Furthermore, due to the nature of the fault, attackers could–under certain conditions–derive the secret key, if they could get their hands on both a faulty signature generated by a vulnerable version of Elliptic and a correct signature for the same inputs.\n\nThis issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","score":5.6},"cwes":["CWE-1240"],"references":["https://github.com/indutny/elliptic/issues/321","https://www.herodevs.com/vulnerability-directory/cve-2025-14505"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2025-14505","score":0.0018,"percentile":0.07581,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-848j-6mx2-7j84","url":"https://osv.dev/vulnerability/GHSA-848j-6mx2-7j84","summary":"Elliptic Uses a Cryptographic Primitive with a Risky Implementation","modified":"2026-09-10T03:50:32.794069999Z","packages":[{"ecosystem":"npm","name":"elliptic","purl":"pkg:npm/elliptic","ranges":["<=6.6.1"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}