CVE-2026-0646
Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 16, 2026
- Updated
- Jun 16, 2026
- Reserved
- Jan 6, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | Rockwell |
Weaknesses
- CWE-401 – Missing Release of Memory after Effective Lifetime
Affected Products
| Product | Versions |
|---|---|
FLEX I/O EtherNet/IP AdaptersRockwell Automation |
|
References
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