CVE-2026-0646
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductFLEX I/O EtherNet/IP Adapters
PublishedJun 16, 2026
First seenJun 16, 2026
Weakness typeCWE-401CWE-401
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Rockwell Automation FLEX I/O EtherNet/IP Adapters | 2.012 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.