# CVE-2025-14505

## Summary

- **CVE ID:** CVE-2025-14505
- **Severity:** MEDIUM
- **CVSS Score:** 5.6 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)
- **CWE:** CWE-1240
- **Published:** Jan 8, 2026
- **Last Modified:** Mar 12, 2026

## 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.

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

## Affected Products

- N/A — Elliptic (<=6.6.1)

## References

- [CNA](https://www.herodevs.com/vulnerability-directory/cve-2025-14505)
- [CNA](https://github.com/indutny/elliptic/issues/321)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 8.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._