High severity · published Sep 1, 2026
CVE-2026-19472
Rockwell Automation ArmorStart® LT Denial Of Service
8.7
CVSS
0.5%
EPSS
No
On KEV
Description
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
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AL
ArmorStart® LT · Rockwell Automation
v2.001 and below · source: vendor
In the news
VulnerabilityHigh
Rockwell Automation ArmorStart LT
View CSAF
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
Mitigation Rockwell Automation has corrected this issue in firmware version v2.002, and en...
Sep 3, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19472
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19472
www.rockwellautomation.com
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1797.html
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