cvedb.io
CVE-2021-43572
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2021-11-09T22:15:07.727 · Last modified 2026-06-17T04:11:09.490

Summary

The verify function in the Stark Bank Python ECDSA library (aka starkbank-escada or ecdsa-python) before 2.0.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Affected products

starkbank — ecdsa-python

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.