CVE-2025-9278: Rockwellautomation Armorstart Lt Firmware

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. After running a Burp Suite active scan, the device loses ICMP connectivity, causing the web application to become inaccessible.

Affected products

• Rockwellautomation Armorstart Lt Firmware: up to and including 2.002

Published 2026-01-20. Last modified 2026-06-17.