1732E ArmorBlock® - Multiple Vulnerabilities
The security of our products is important to us as your industrial automation supplier. This security issue was found internally during routine testing and is being reported based on our commitment to customer transparency and improvement of all business environments.
Product Description
The 1732E ArmorBlock® I/O is an on-machine distributed I/O module designed for rugged industrial environments, providing configurable digital and analog I/O with EtherNet/IP connectivity and an integrated webserver for device configuration and management.
Affected Products and Solution
Affected Product |
CVE |
Affected Software Version |
Corrected in Software Version |
Affected Catalog Numbers |
1732E ArmorBlock® I/O |
CVE-2026-12655 |
3.012 and earlier |
3.013 |
1732E-IB16M12R 1732E-IB16M12DR 1732E-OB16M12DR 1732E-8X8M12DR 1732E-16CFGM12QCWR 1732E-12X4M12QCDR 1732E-16CFGM12QCR 1732E-16CFGM12P5QCR 1732E-12X4M12P5QCDR 1732E-16CFGM12P5QCWR |
1732E ArmorBlock® I/O |
CVE-2026-12656 |
3.012 and earlier |
3.013 |
1732E-IB16M12R 1732E-IB16M12DR 1732E-OB16M12DR 1732E-8X8M12DR
|
Security Issue Details for CVE-2026-12655
Category |
Details |
CVE ID |
CVE-2026-12655 |
Impact |
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. |
CVSS 3.1 Base Score |
|
CVSS 4.0 Base Score |
|
CWE |
|
Known Exploited Vulnerability |
No |
Security Issue Details for CVE-2026-12656
Category |
Details |
CVE ID |
CVE-2026-12656 |
Impact |
A denial-of-service security issue exists in the affected product and version. The security issue stems from improper handling of network storm traffic, which can interrupt communication, cause device faults, and affect open TCP and UDP ports. A power cycle is required to recover the device to its normal state.
|
CVSS 3.1 Base Score |
|
CVSS 4.0 Base Score |
|
CWE |
CWE-770: Allocation of Resources Without Limits or Throttling |
Known Exploited Vulnerability |
No |
Mitigations and Workarounds
Customers using the affected software, who are not able to upgrade to one of the corrected versions, should use our security best practices.
Revision History
Revision |
Date |
Description |
1.0 |
10/13/2026 |
Initial release |
Glossary:
· TCP: (Transmission Control Protocol) A connection-oriented protocol that ensures reliable data transmission between devices.
· UDP: (User Datagram Protocol) A connectionless communication protocol that enables fast, lightweight data transmission between devices without guaranteeing delivery or ordering.
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Support
If you have any questions regarding the security issue(s) above and how to mitigate them, contact TechConnect for help. More information can be found at Contact Us | Rockwell Automation | US.
If you have any questions regarding this disclosure, please contact PSIRT
Email: rasecure@ra.rockwell.com
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