🛡️ CVE-2025-14505 — elliptic

🟡 CVSS 5.6 — Medium ✅ No Known Exploit CWE-1240 NVD

5.6

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Elliptic Uses a Cryptographic Primitive with a Risky Implementation

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).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

CVE-2025-14505 is classified as CWE-1240: Use of a Cryptographic Primitive with a Risky Implementation. To fulfill the need for a cryptographic primitive, the product implements a cryptographic algorithm using a non-standard, unproven, or disallowed/non-compliant cryptographic implementation.

Affected software

CVE-2025-14505 is recorded against 2 packages.

elliptic
unknown

Timeline and source

Published on 8 January 2026 and last revised on 17 February 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
www.herodevs.com (Web)

CVE-2025-14505 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity LOW

CVSS Score 5.6

CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE CWE-1240

Public Exploit ✅ No

Source NVD

Published 2026-01-08

Updated 2026-08-12

Modified 2026-02-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
elliptic	—	—
unknown	—	—

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-14505

WEB https://github.com/indutny/elliptic/issues/321

PACKAGE https://github.com/indutny/elliptic

WEB https://www.herodevs.com/vulnerability-directory/cve-2025-14505

🔗 NVD 🔗 Mitre

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