Pyramid Solutions NetStaX EtherNet/IP Stack

September 3, 2026·Source: CISA

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TL;DR

View CSAF Summary Successful exploitation of this vulnerability could result in 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. The following versions of Pyramid Solutions NetStaX EtherNet/IP Stack are affected: EtherNet/IP Adapter DLL Kit (EIPA) EtherNet/IP Adapter DLL Kit with CIP Security (EIPA-SECURE) EtherNet/IP Adapter Development Kit (EADK) EtherNet/IP Adapter Development Kit with CIP Security (EADK-SECURE) EtherNet/IP Scanner DLL Kit (EIPS) EtherNet/IP Scanner DLL Kit with CIP Security (EIPS-SECURE) EtherNet/IP Scanner Development Kit (ESDK) EtherNet/IP Scanner Development Kit with CIP Security (ESDK-SECURE) CVSS Vendor Equipment Vulnerabilities

v3 9.8 Pyramid Solutions Pyramid Solutions NetStaX EtherNet/IP Stack Stack-based Buffer Overflow

Background Critical Infrastructure Sectors: Critical Manufacturing, Energy, Water and Wastewater, Chemical Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + 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 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. View CVE Details Affected Products Pyramid Solutions NetStaX EtherNet/IP Stack Vendor: Pyramid Solutions Product Version: Pyramid Solutions EtherNet/IP Adapter DLL Kit (EIPA): <v5.6.1, Pyramid Solutions EtherNet/IP Adapter DLL Kit with CIP Security (EIPA-SECURE): <v5.6.1, Pyramid Solutions EtherNet/IP Adapter Development Kit (EADK): <v5.6.1, Pyramid Solutions EtherNet/IP Adapter Development Kit with CIP Security (EADK-SECURE): <v5.6.1, Pyramid Solutions EtherNet/IP Scanner DL

What Happened

Pyramid Solutions NetStaX EtherNet/IP Stack, reported by CISA.

v3 9.8 Pyramid Solutions Pyramid Solutions NetStaX EtherNet/IP Stack Stack-based Buffer Overflow

For the full technical details, see the original report.

Why It Matters for Businesses

This development could affect organizations that rely on the impacted technologies or services. Unpatched systems, misconfigured infrastructure, or lack of monitoring can leave businesses exposed to exploitation, data breaches, and regulatory penalties.

How to Check Your Exposure

Run a free scan on NEL Professional's Cyber Risk Scanner to check whether your domain is affected. The scan covers SSL/TLS, security headers, DNS configuration, email authentication, and more across 16 modules.

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Mitigation Steps

Patch immediately, Apply vendor patches or updates as soon as they are available.
Review configurations, Check firewall rules, access controls, and security headers.
Monitor logs, Watch for indicators of compromise (IOCs) related to this threat.
Update security policies, Ensure incident response plans cover this type of threat.
Run a security scan, Use automated tools to verify your exposure.

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