CVE-2026-12656: high-severity vulnerability in Rockwell Automation 1732E ArmorBlock® I/O
1732E ArmorBlock® - Multiple Vulnerabilities
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.3%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Rockwell Automation · 1732E ArmorBlock® I/ORelated CVEs — Rockwell Automation 1732E ArmorBlock® I/O
In the same product, most dangerous first.