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THREAT OPS › Threat News › [NVD] CVE-2026-78012 (CRITICAL 9.8) — 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

[NVD] CVE-2026-78012 (CRITICAL 9.8) — 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

mednvdPublished 2026-09-01

CVE-2026-78012 CVSS: 9.8 CRITICAL Published: 2026-09-01T15:17:28.013

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

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-78012