CVE-2025-9278
Published: 20 January 2026
Summary
CVE-2025-9278 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Rockwellautomation Armorstart Lt Firmware. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 8.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.
Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct exploitation of the CWE-400 resource consumption flaw in the public web interface triggers application/system DoS, matching T1499.004.
NVD Description
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.
Deeper analysisAI
CVE-2025-9278 is a denial-of-service vulnerability affecting ArmorStart® LT devices from Rockwell Automation. The issue, classified under CWE-400 (Uncontrolled Resource Consumption), allows a security scan such as a Burp Suite active scan to trigger a condition where the device loses ICMP connectivity, rendering the web application inaccessible. It has a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high severity primarily due to its impact on availability.
The vulnerability can be exploited by any unauthenticated attacker with network access to the device, requiring low complexity and no user interaction. By sending traffic mimicking a Burp Suite active scan, the attacker can cause the ArmorStart® LT to enter a denial-of-service state, disrupting ICMP connectivity and blocking access to the web interface.
For mitigation details, refer to Rockwell Automation's security advisory at https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1768.html, published alongside the CVE on 2026-01-20.
Details
- CWE(s)