VULNERABILITY INTELLIGENCE

CVE-2021-43571

CVSS score9.8 CRITICAL
EPSS probability1.03%
CISA KEVNot currently listed
Published2021-11-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The verify function in the Stark Bank Node.js ECDSA library (ecdsa-node) 1.1.2 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Weakness classification

  • nvd@nist.gov: CWE-347

Primary references