CVE-2025-9465Network attack vector

Unauthenticated device reboot via malformed grammar traffic

Published Jan 20, 2026 · Updated Jan 20, 2026

Uncontrolled resource consumption in Rockwell Automation ArmorStart LT V2.002 and earlier allows remote attackers to reboot the device. Rockwell Automation has not identified the parsing locus; crafted Achilles Comprehensive grammar traffic forces an unexpected restart. No authentication or user interaction is required, and the Link State Monitor loses connectivity for several seconds while the controller reboots.

CVSS severity8.7
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Rockwell Automation ArmorStart LT V2.002 and earlier allows remote attackers to reboot the device. Rockwell Automation has not identified the parsing locus; crafted Achilles Comprehensive grammar traffic forces an unexpected restart. No authentication or user interaction is required, and the Link State Monitor loses connectivity for several seconds while the controller reboots.

The record

CVE
CVE-2025-9465
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

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=V2.002 and below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · ArmorStart LTversion=V2.002 and below

Published CVSS scores

8.7Rockwell AutomationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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