cvedb.io
CVE-2021-4209
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2022-08-24T16:15:09.927 · Last modified 2026-06-17T04:19:13.347

Summary

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

Affected products

gnu — gnutls

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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.