What is CVE-2025-9278?

CVE-2025-9278 is a high-severity vulnerability in Rockwell Automation Armorstart® Lt, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-01-20.

How severe is CVE-2025-9278?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Rockwell Automation Armorstart® Lt

CVE-2025-9278

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (34.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Rockwell Automation Armorstart® Lt — versions V2.002 and below
Rockwellautomation Armorstart_lt
Rockwellautomation Armorstart_lt_firmware

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

PSIRT@rockwellautomation.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-9278?: CVE-2025-9278 is a high-severity vulnerability in Rockwell Automation Armorstart® Lt, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-01-20.
How severe is CVE-2025-9278?: High severity. CVSS v3 base score is 7.5 out of 10.