Cryptographic Vulnerability in Elliptic Package by Indutny
CVE-2025-14505

5.6MEDIUM

Key Information:

Vendor

N/a

Status
Elliptic
Vendor
CVE Published:
8 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-14505?

The Elliptic package experiences a significant cryptographic vulnerability where the ECDSA implementation generates incorrect signatures. This flaw arises due to an improper computation of the interim value 'k', leading to potential truncation when it has leading zeros. As a result, an attacker can exploit faulty signatures in conjunction with valid ones, jeopardizing the secret key's confidentiality. This issue adversely affects transaction integrity, making it critical for users of Elliptic to assess their implementations and mitigate associated risks.

Affected Version(s)

Elliptic <=6.6.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-14505 - Proof of Concept

References

https://www.herodevs.com/vulnerability-directory/cve-2025...
third-party-advisory
https://github.com/indutny/elliptic/issues/321
issue-trackingexploit

CVSS V3.1

Score:
5.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Daniel Bleichenbacher
Subheader (https://github.com/Subheader)
George Kalpakas from HeroDevs
JSON
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CVE-2025-14505 : Cryptographic Vulnerability in Elliptic Package by Indutny