CVE-2021-43569
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-43569
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43569.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-43569
- Aliases
- Published
- 2021-11-09T22:15:07.597Z
- Modified
- 2025-11-14T12:34:13.183432Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.
- References