CVE-2026-12656
High
Description
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.
SeverityHigh
CVSS8.7
Exploit probability—
Product1732E ArmorBlock® I/O
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Rockwell Automation 1732E ArmorBlock® I/O | v ≤ 3.012 | — |
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