CVE-2026-12655
Received Received - Intake

Unauthenticated Password Change in 1732E ArmorBlock I/O

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Rockwell Automation

Description
A security issue exists within 1732E ArmorBlock® I/O, where an unauthenticated attacker can change the device's webserver password without valid credentials. This could result in admin account takeover or unauthorized modification of device configuration.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-12655
EUVD
EUVD-2026-98743

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Rockwell Automation 1732E ArmorBlock® I/O 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-294 A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

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Executive Summary

This vulnerability allows an unauthenticated attacker to change the webserver password of a Rockwell Automation 1732E ArmorBlock I/O device without valid credentials. This could lead to unauthorized access and control of the device.

Impact Analysis

An attacker could take over the admin account, modify device configurations, or gain unauthorized access to the device, potentially disrupting operations or causing safety issues.

Mitigation Strategies

Immediately isolate affected 1732E ArmorBlock I/O devices from untrusted networks. Disable remote web access if not required. Change all device passwords using verified secure methods. Monitor device configurations for unauthorized changes.

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