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Summary
Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition.
The following versions of Rockwell Automation ArmorStart LT are affected:
- ArmorStart LT 290D <=V2.002 (CVE-2025-9464, CVE-2025-9465, CVE-2025-9466, CVE-2025-9278, CVE-2025-9279, CVE-2025-9280, CVE-2025-9281, CVE-2025-9282, CVE-2025-9283)
- ArmorStart LT 291D <=V2.002 (CVE-2025-9464, CVE-2025-9465, CVE-2025-9466, CVE-2025-9278, CVE-2025-9279, CVE-2025-9280, CVE-2025-9281, CVE-2025-9282, CVE-2025-9283)
- ArmorStart LT 294D <=V2.002 (CVE-2025-9464, CVE-2025-9465, CVE-2025-9466, CVE-2025-9278, CVE-2025-9279, CVE-2025-9280, CVE-2025-9281, CVE-2025-9282, CVE-2025-9283)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 7.5 | Rockwell Automation | Rockwell Automation ArmorStart LT | Uncontrolled Resource Consumption |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
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CVE-2025-9464
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. This vulnerability is triggered during fuzzing of multiple CIP classes, which causes the CIP port to become unresponsive.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9465
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles Comprehensive grammar tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9466
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles EtherNet/IP and CIP grammar tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
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.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9279
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles EtherNet/IP Step Limit Storm tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9280
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. Fuzzing performed using Defensics causes the device to become unresponsive, requiring a reboot.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9281
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles Comprehensive step limit storm tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9282
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles Comprehensive limited storm tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2025-9283
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles EtherNet/IP Step Limits Storms tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Rockwell Automation
Rockwell Automation ArmorStart LT 290D: <=V2.002, Rockwell Automation ArmorStart LT 291D: <=V2.002, Rockwell Automation ArmorStart LT 294D: <=V2.002
known_affected
Remediations
Mitigation
There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.
Mitigation
See Rockwell Automation’s SD1768 advisory for more information.
Relevant CWE: CWE-400 Uncontrolled Resource Consumption
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Acknowledgments
- Rockwell Automation reported these vulnerabilties to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-01-29
| Date | Revision | Summary |
|---|---|---|
| 2026-01-29 | 1 | Initial Republication of Rockwell Automation advisory SD1768 |
