CVE-2026-0647

Last refreshed2026-10-06

Status: UPDATED | Advisory ID: CVE-2026-0647

Key Details

CVE	CVE-2026-0647
CVSS Score / Version	8.8 (High) / CVSS v4.0
Updated	2026-06-17
Affected products	Rockwell Automation FLEX I/O EtherNet/IP Adapters
Classified as	CWE-306 (Missing Authentication for Critical Function)

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Rockwell Automation	FLEX I/O EtherNet/IP Adapters

Vendor

Product

Affected Versions

Patch Status

Rockwell Automation

FLEX I/O EtherNet/IP Adapters

Subsystems	General OT
Sectors	Multiple

What to Know

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. (NVD)

What to Do

Monitor Rockwell Automation's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-0647
CVE	https://www.cve.org/CVERecord?id=CVE-2026-0647

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-0647

CVE