Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Pyramid Solutions / EtherNet/IP Adapter DLL Kit (EIPA) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Adapter DLL Kit with CIP Security (EIPA-SECURE) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Adapter Development Kit (EADK) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Adapter Development Kit with CIP Security (EADK-SECURE) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Scanner DLL Kit (EIPS) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Scanner DLL Kit with CIP Security (EIPS-SECURE) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Scanner Development Kit (ESDK) | affected 0 through v5.6.1; unaffected v5.6.1 |
| Pyramid Solutions / EtherNet/IP Scanner Development Kit with CIP Security (ESDK-SECURE) | affected 0 before v5.6.1; unaffected v5.6.1 |
CWE
CWE-121
References
- https://pyramidsolutions.com/netstax-v-5-6-1-protecting-against-silent-buffer-overflow-in-ethernet-ip-stack-explicit-messages/
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-246-07
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-246-07.json
ADP enrichment
No English description supplied.
No references supplied.