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CVE-2026-0647

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

Published: Jun 16, 2026Updated: Jun 16, 2026 Sources: CVE List NVD csafCWE-306
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 68.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-306

Affected Products

FLEX I/O EtherNet/IP AdaptersRockwell AutomationICS / OT / IoT
rockwell automationcommercialUSICS / OT / IoTaka arena®, arena simulation, armorstart st

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1775.html
rockwellautomation.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-167-05.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-26-167-05
cisa.gov
and 19 more references View all →

Timeline

Published
Jun 16, 2026
Last Updated
Jun 16, 2026
News mentions
1

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