Summary
Successful exploitation of these vulnerabilities could result in a loss of webserver availability or allow an attacker to inject malicious scripts that will be executed when other users access the affected page.The following versions of Rockwell Automation ArmorStart LT are affected:
- ArmorStart LT <=v2.001 (CVE-2026-19471, CVE-2026-19472)
CVSS
Vendor
Equipment
Vulnerabilities
v3 7.5
Rockwell Automation
Rockwell Automation ArmorStart LT
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Allocation of Resources Without Limits or Throttling
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
Expand All +
CVE-2026-19471
Multiple stored cross-site scripting security issues exist within ArmorStart LT. Stored XSS occurs when user input is not properly sanitized and is stored on the server, allowing an attacker to inject malicious scripts that will be executed when other users access the affected page.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Vendor:Rockwell Automation
Product Version:Rockwell Automation ArmorStart LT: <=v2.001
Product Status:known_affected
Remediations
MitigationRockwell Automation has corrected this issue in firmware version v2.002, and encourages all users to update to the newest version.
MitigationUsers of the affected software who are not able to upgrade to one of the corrected versions should follow Rockwell Automation's security best practices.
https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight
MitigationFor more information on this issue, see the Rockwell Automation security advisory at: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html
https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html
Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
7.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4.0
6.9
MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVE-2026-19472
A denial-of-service security issue exists within ArmorStart LT. The security issue stems from improper handling of a crafted HTTP PUT request sent to the embedded web server. This can result in a loss of web server availability.
View CVE Details
Affected Products
Rockwell Automation ArmorStart LT
Vendor:Rockwell Automation
Product Version:Rockwell Automation ArmorStart LT: <=v2.001
Product Status:known_affected
Remediations
MitigationRockwell Automation has corrected this issue in firmware version v2.002, and encourages all users to update to the newest version.
MitigationUsers of the affected software who are not able to upgrade to one of the corrected versions should follow Rockwell Automation's security best practices.
https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight
MitigationFor more information on this issue, see the Rockwell Automation security advisory at: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html
https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html
Relevant CWE: CWE-770 Allocation of Resources Without Limits or ThrottlingMetrics
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
4.0
8.7
HIGH
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
Acknowledgments
- Rockwell Automation reported these vulnerabilities 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. 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: 2026-09-03
Date
Revision
Summary
2026-09-03
1
Initial Republication of Rockwell Automation security advisory.