CVE-2026-78012
Last modified
CVE-2026-78012 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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..
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| 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 DLL Kit (EIPS) | <= v5.6.1 |
| Pyramid Solutions | EtherNet/IP Scanner DLL Kit with CIP Security (EIPS-SECURE) | <= v5.6.1 |
| Pyramid Solutions | EtherNet/IP Scanner Development Kit (ESDK) | <= v5.6.1 |
| Pyramid Solutions | EtherNet/IP Scanner Development Kit with CIP Security (ESDK-SECURE) | < v5.6.1 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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