CVE-2025-7693Network attack vector

Controller crash via malformed CIP Forward Close

Published Aug 18, 2025 · Updated Aug 18, 2025

Improper input validation in Rockwell Automation Micro850 L50E and Micro870 L70E V20.011 through V22.011 allows remote attackers to crash controllers. The CIP Forward Close handler improperly processes malformed network packets, placing the controller in a solid-red fault state and making it unresponsive. No authentication or user interaction is required; a power cycle leaves fault code 0xF015, and clearing the recoverable fault is required to restore operation.

CVSS severity9.3
Critical
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

Improper input validation in Rockwell Automation Micro850 L50E and Micro870 L70E V20.011 through V22.011 allows remote attackers to crash controllers. The CIP Forward Close handler improperly processes malformed network packets, placing the controller in a solid-red fault state and making it unresponsive. No authentication or user interaction is required; a power cycle leaves fault code 0xF015, and clearing the recoverable fault is required to restore operation.

The record

CVE
CVE-2025-7693
Published
Aug 18, 2025
Updated
Aug 18, 2025
Vendor
Rockwell Automation
Product
Micro820, Micro850, and Micro870 Controllers
Classifications
CWE-20, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=V20.011 - V22.011

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · Micro820, Micro850, and Micro870 Controllersversion=V20.011 - V22.011

Published CVSS scores

9.3Rockwell AutomationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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.

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-20Improper Input Validation
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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