CVE-2025-14505

CVE-2025-14505 · Elliptic Cryptanalysis vulnerability when `k` has leading zeros

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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. This issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1).

CVSS 5.6 · Mittel · EPSS 0,2% · Korrektur verfügbar

Veröffentlicht

2026-01-08T21:05:14.800Z

Aktualisiert

2026-01-08T21:22:55.144Z

Technologie-Stack: system · node

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