CVE-2026-12656: 1732E ArmorBlock® - Multiple Vulnerabilities
Published Oct 13, 2026
·Updated
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.
Affected Software
1 affected component
Rockwell Automation 1732E ArmorBlock
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
1732E ArmorBlockto a version that resolves this vulnerability.Fixed in 3.013 - Operational
Power cycle the device to recover it to its normal state.
Event History
Oct 13, 2026
CVE Published
via MITRE·02:12 PM
Data Sourced
via MITRE·02:12 PM
RemedyDescriptionWeakness
Data Sourced
via NVD·03:17 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What network conditions can trigger the denial of service?
The issue is triggered by improper handling of network storm traffic. This can interrupt communications, cause device faults, and affect open TCP and UDP ports.
2
What recovery action is required after a device is affected?
A power cycle is required to return the device to its normal state.