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

Quick assessment

Affected
N/A Elliptic
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Elliptic是Fedor Indutny个人开发者的一个 javascript 中的快速椭圆曲线密码库。 Elliptic 6.6.1及之前版本存在安全漏洞，该漏洞源于ECDSA实现中k值计算错误，可能导致密钥泄露。

CVSS 5.6 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2025-14505

Vulnerability Information
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Vulnerability Title
Elliptic Cryptanalysis vulnerability when `k` has leading zeros
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1240
Source: CVE Program / CVE List V5
Vulnerability Title
Elliptic 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elliptic是Fedor Indutny个人开发者的一个 javascript 中的快速椭圆曲线密码库。 Elliptic 6.6.1及之前版本存在安全漏洞，该漏洞源于ECDSA实现中k值计算错误，可能导致密钥泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
N/A Elliptic <=6.6.1 -

II. Public POCs for CVE-2025-14505

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III. Intelligence Information for CVE-2025-14505

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Other References for CVE-2025-14505 (1)

Same Patch Batch · N/A · 2026-01-08 · 25 CVEs total

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CVE-2025-56425 OPTIMAL SYSTEMS enaio AppConnector 安全漏洞
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CVE-2025-61546 edu Business Solutions Print Shop Pro WebDesk 安全漏洞

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Elliptic
Same vendor: N/A
Same weakness: CWE-1240

V. Comments for CVE-2025-14505

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