CVE-2026-78012: CWE-121 in Pyramid Solutions EtherNet/IP Adapter DLL Kit (EIPA)
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.
CVE-2026-78012: CWE-121 in Pyramid Solutions EtherNet/IP Adapter DLL Kit (EIPA)
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.
CVSS v3.1
Score 9.8critical
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-08-21T22:15:28.774Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a96edc2acd9273b49deccd2
Added to database: 09/01/2026, 15:22:42 UTC
Last updated: 09/01/2026, 15:39:15 UTC
Views: 4
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