CVE-2026-12656

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.

Score

CVSS 4.0 8.7 High

Status

Deferred - PSIRT@rockwellautomation.com

Published

2026-10-13

Last modified

2026-10-16

Weaknesses

CWE-770

Affected products

• 1732e Armorblock Io (Rockwell Automation)

References

• https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1801.html