CVE-2026-0647
High
Description
An improper authentication security issue exists within the 1794-AENTR adapter's embedded web server. The vulnerability allows an unauthenticated attacker to change the device's web interface password by sending a crafted HTTP GET request to a specific endpoint, without any prior authentication being required. If exploited, this could lead to unauthorized access, account takeover, and loss of the device’s embedded web server’s availability.
SeverityHigh
CVSS8.8
Exploit probability—
ProductFLEX I/O EtherNet/IP Adapters
PublishedJun 16, 2026
First seenJun 16, 2026
Weakness typeCWE-306Missing authentication for critical function
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 | — |
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