Denial-of-Service Vulnerability in Rockwell Automation Products
CVE-2026-12656

8.7HIGH

Key Information:

Vendor

Rockwell Automation
Status
1732e ArmorblockĀ® I/o
Vendor
CVE Published:
13 October 2026

What is CVE-2026-12656?

A denial-of-service vulnerability has been identified in Rockwell Automation products, leading to severe interruptions in network communication. This issue is caused by inadequate management of network storm traffic, which can disrupt connectivity and create device faults. In such instances, affected devices may remain unresponsive, necessitating a power cycle to restore functionality. Organizations utilizing these products should prioritize assessment and mitigation strategies to safeguard against potential disruptions.

Affected Version(s)

1732E ArmorBlockĀ® I/O 0 <= 3.012

References

https://www.rockwellautomation.com/en-us/trust-center/sec...

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.