# CVE-2025-14505: node-elliptic: The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of 'k' (as comput...

CVE-2025-14505 is fixed in node-elliptic on 1 platform by DEBIAN-CVE-2025-14505 (version 6.6.1+dfsg+~6.4.18-2), released January 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-14505
- Priority: Routine
- CVSS: 5.6 (medium)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 8, 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).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-elliptic Debian 14 | 6.6.1+dfsg+~6.4.18-2 | [DEBIAN-CVE-2025-14505](https://patchblox.com/security/data/fix/linux/debian-cve-2025-14505.md) | Jan 8, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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