cvedb.io
CVE-2021-42343
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2021-10-26T11:15:07.800 · Last modified 2026-06-17T04:09:40.847

Summary

An issue was discovered in the Dask distributed package before 2021.10.0 for Python. Single machine Dask clusters started with dask.distributed.LocalCluster or dask.distributed.Client (which defaults to using LocalCluster) would mistakenly configure their respective Dask workers to listen on external interfaces (typically with a randomly selected high port) rather than only on localhost. A Dask cluster created using this method (when running on a machine that has an applicable port exposed) could be used by a sophisticated attacker to achieve remote code execution.

Affected products

anaconda — dask

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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.