cvedb.io
CVE-2026-39834
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-05-22T04:16:24.237 · Last modified 2026-06-17T10:42:40.057

Summary

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

Affected products

golang — crypto

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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.