CVE-2025-9466

ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities

Published Jan 20, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Rockwellautomation armorstart Lt Firmware
CPEs cpe:2.3:h:rockwellautomation:armorstart_lt:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:armorstart_lt_firmware:*:*:*:*:*:*:*:*
Vendors & Products Rockwellautomation armorstart Lt Firmware
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
First Time appeared Rockwellautomation
Rockwellautomation armorstart Lt
Vendors & Products Rockwellautomation
Rockwellautomation armorstart Lt
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Rockwell
Published
Updated
Jan 20, 2026, 2:11 PM
Reserved
Aug 25, 2025, 2:53 PM
Status
Analyzed
Published
Jan 20, 2026, 2:16 PM
Modified
Jun 17, 2026, 10:09 AM