CVE-2025-9279CWE-400

ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities

High · published January 20, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
48.6
In the wild
Unconfirmed
What it is

⚡ Unexpected reboots while running tests? That’s exactly what happens with ArmorStart® LT during the Achilles EtherNet/IP Step Limit Storm tests! 🔥 Think of it like a busy restaurant where, during a rush, the kitchen suddenly closes for a few seconds — all orders get delayed, and customers are left wondering what's happening. That's what the unexpected reboots cause in your system, interrupting critical functions. This denial-of-service condition can lead to significant downtime, with the Link State Monitor being unresponsive for several seconds. The fallout? Critical operations may halt, leading to delays and disruptions in your network services when you need them most. Talk about an unexpected dinner party interruption!

Put simply

Think of it like a busy restaurant where, during a rush, the kitchen suddenly closes for a few seconds — all orders get delayed, and customers are left wondering what's happening. That's what the unexpected reboots cause in your system, interrupting critical functions. The vulnerability arises during specific tests, where the ArmorStart® LT device unexpectedly reboots, resulting in a temporary loss of monitoring capabilities. This could disrupt connected systems and lead to performance issues, especially in automated environments.

What to do

This denial-of-service condition can lead to significant downtime, with the Link State Monitor being unresponsive for several seconds. The fallout? Critical operations may halt, leading to delays and disruptions in your network services when you need them most. Talk about an unexpected dinner party interruption! To mitigate this, consider updating your ArmorStart® LT to the latest firmware version that addresses this reboot issue. Additionally, monitor your system for abnormal occurrences during testing phases and implement fallback mechanisms to handle any unexpected downtime gracefully. You've got this! By staying proactive and following these steps, your systems will be stronger than ever! 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.00611 · 48.6th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-01-20T13:56Z
EPSS history
Timeline
  • 20 JAN 13:56Z
    ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities
    cvelistv5