CVE-2025-9368Network attack vector

Unauthenticated denial of service via resource exhaustion

Published Dec 9, 2025 · Updated Dec 9, 2025

Resource exhaustion in Rockwell Automation 432ES-IG3 Series A 1.001 allows remote attackers to halt the interface over EtherNet/IP. Rockwell Automation maps the flaw to unbounded or unthrottled resource allocation but has not disclosed the specific request, protocol object, or processing path that consumes those resources. Unauthenticated network access is sufficient, and successful exploitation leaves the safety communication interface unavailable until a manual power cycle.

CVSS severity8.7
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Rockwell Automation 432ES-IG3 Series A 1.001 allows remote attackers to halt the interface over EtherNet/IP. Rockwell Automation maps the flaw to unbounded or unthrottled resource allocation but has not disclosed the specific request, protocol object, or processing path that consumes those resources. Unauthenticated network access is sufficient, and successful exploitation leaves the safety communication interface unavailable until a manual power cycle.

The record

CVE
CVE-2025-9368
Published
Dec 9, 2025
Updated
Dec 9, 2025
Vendor
Rockwell Automation
Product
432ES-IG3 GuardLink EtherNet/IP Interface
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 9, 2025Record 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=1.001

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · 432ES-IG3 GuardLink EtherNet/IP Interfaceversion=1.001

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

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.

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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-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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