PT-2026-49708 · Rockwell Automation · Flex I/O Ethernet/Ip Adapters

Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-0647

Mitre

CVSS v4.0

8.8

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-0647

Affected Products

Flex I/O Ethernet/Ip Adapters

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-0647 · Security Note
• https://rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1775.html · Note