CRITICAL 9.3 NVD

CVE-2026-78012

An issue in the NetStaX EtherNet/IP Stack prior to v5.6.1 could allow a large Class 3 explicit-message request to exceed the application-side receive buffer wit

An issue in the NetStaX EtherNet/IP Stack prior to v5.6.1 could allow a large Class 3 explicit-message request to exceed the application-side receive buffer without generating an error or warning. The result could be memory corruption, a device crash, or a potential remote attack vector without the originating device receiving a CIP error indicating that the request could not be processed.

References

https://pyramidsolutions.com/netstax-v-5-6-1-protecting-against-silent-buffer-overflow-in-

Published: 2026-09-01 · Source: NVD · Feed updated: 2026-09-01

This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-01 via NVD.

Risk Timeline

CVE Disclosed2026-09-01 · -1 days ago

Remediation Resources

Analysis & PoC

pyramidsolutions.com/netstax-v-5-6-1-protecting-against-silent-buffer-

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