Description
A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Rockwell Automation | FLEX I/O EtherNet/IP Adapters | 2.012 | — |
Advisories 1
- ICSA-26-167-05 Rockwell Automation FLEX I/O EtherNet/IP Adapters CISA ICS & IT advisories · Jun 16, 2026