Unauthenticated service interruption via active web scan
Published Jan 20, 2026 · Updated Jan 20, 2026
Uncontrolled resource consumption in ArmorStart LT 2.002 and earlier allows remote attackers to interrupt its web service via active scanning. Rockwell has not disclosed which embedded web-server request handler or resource limit is exhausted by the scan. No authentication or user interaction is required; the reported consequence is loss of network and web-management availability, not a controller reboot.
Summary
What happened
Uncontrolled resource consumption in ArmorStart LT 2.002 and earlier allows remote attackers to interrupt its web service via active scanning. Rockwell has not disclosed which embedded web-server request handler or resource limit is exhausted by the scan. No authentication or user interaction is required; the reported consequence is loss of network and web-management availability, not a controller reboot.
The record
- CVE
- CVE-2025-9278
- Published
- Jan 20, 2026
- Updated
- Jan 20, 2026
- Vendor
- Rockwell Automation
- Product
- ArmorStart LT
- Classifications
- CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 20, 2026CVE publishedPublication date reported by the CVE source.
- Jan 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=V2.002 and below
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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