CVE-2026-78012
CriticalCVSS 9.8Summary
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 error. This could result in memory corruption, device crash, or remote attack vector.
Risk Assessment
An attacker could cause device crashes or gain remote access, disrupting industrial operations.
Recommendation
Update the NetStaX EtherNet/IP Stack to v5.6.1 or later and monitor network traffic for unusual requests.
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Original NVD description (English source)
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.