CVE-2024-7567Network attack vector

Unauthenticated CIP/Modbus communication disruption

Published Aug 13, 2024 · Updated Aug 13, 2024

Denial of service in Rockwell Automation Micro850 and Micro870 20.011 before 22.011 allows remote attackers to disrupt CIP/Modbus communications. Rockwell Automation has not disclosed the malformed request or the internal CIP/Modbus operation that mishandles it. No authentication is required, and the documented consequence is a short communication interruption rather than persistent controller damage.

CVSS severity5.3
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Rockwell Automation Micro850 and Micro870 20.011 before 22.011 allows remote attackers to disrupt CIP/Modbus communications. Rockwell Automation has not disclosed the malformed request or the internal CIP/Modbus operation that mishandles it. No authentication is required, and the documented consequence is a short communication interruption rather than persistent controller damage.

The record

CVE
CVE-2024-7567
Published
Aug 13, 2024
Updated
Aug 13, 2024
Vendor
Rockwell Automation
Product
Micro820, Micro850, and Micro870 Controllers
Classifications
T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2024Record 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=20.011 <22.011
  2. Affected versionversion=v20.011

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · Micro820, Micro850, and Micro870 Controllersversion=20.011 <22.011; version=v20.011

Published CVSS scores

5.3Rockwell AutomationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.9Rockwell AutomationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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.

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

T0814Denial of Service

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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