CVE-2026-0646CWE-401

Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities

High · published June 16, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
26.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.00343 · 26.6th percentile
Weakness
CWE-401 · Missing Release of Memory after Effective Lifetime
Published
2026-06-16T14:19Z
EPSS history
Timeline
  • 16 JUN 14:19Z
    Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
    cvelistv5