dbcve.org
Factorytalk LinxApplication · Rockwellautomation

CVE-2023-29464

CRITICAL · 9.1 CVSS v3.1 Published 2023-10-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
FactoryTalk Linx, in the Rockwell Automation PanelView Plus, allows an unauthenticated threat actor to read data from memory via crafted malicious packets. Sending a size larger than the buffer size results in leakage of data from memory resulting in an information disclosure. If the size is large enough, it causes communications over the common industrial protocol to become unresponsive to any type of packet, resulting in a denial-of-service to FactoryTalk Linx over the common industrial protocol.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

FactoryTalk Linx in Rockwell Automation PanelView Plus contains a buffer over-read vulnerability where crafted packets with a size field larger than the allocated buffer allow unauthenticated attackers to read sensitive memory contents beyond buffer boundaries. If the oversized packet size is sufficient, it causes the Common Industrial Protocol communications to become unresponsive, resulting in denial of service.

MitigationIsolate affected PanelView Plus devices on a dedicated network segment with strict firewall rules limiting CIP access to authorized endpoints only, and monitor for anomalous packet sizes targeting port 44818 (EtherNet/IP).

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Factorytalk LinxApplication
Affected:= 6.20= 6.30

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm FactoryTalk Linx installation
    Locate FactoryTalk Linx software on the PanelView Plus device or its associated engineering station. Check the installed programs or product documentation for the presence of FactoryTalk Linx component.
    Affected if FactoryTalk Linx is present on the system
  2. Identify installed FactoryTalk Linx version
    Access the FactoryTalk Linx application or its runtime environment. Navigate to the product information or about section to retrieve the exact version number installed.
    Affected if The installed version is exactly 6.20 or exactly 6.30
  3. Verify CIP/EtherNet/IP communication is enabled
    Check the FactoryTalk Linx configuration for Common Industrial Protocol (CIP) or EtherNet/IP communication settings. Confirm that CIP connections are permitted on the device.
    Affected if CIP/EtherNet/IP communication is enabled and port 44818 is active
  4. Review network traffic for oversized packets
    Monitor network traffic on port 44818 (EtherNet/IP) using a packet capture tool. Look for incoming packets where the size field value exceeds expected CIP packet dimensions.
    Affected if Packet captures show unusually large size field values in CIP traffic

A user is affected if FactoryTalk Linx version 6.20 or 6.30 is installed with CIP/EtherNet/IP communication enabled, exposing the device to oversized packet handling.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Isolate affected PanelView Plus devices on a dedicated network segment with strict firewall rules limiting CIP access to authorized endpoints only, and monitor for anomalous packet sizes targeting port 44818 (EtherNet/IP).

Recommended fix Moderate confidence

FactoryTalk Linx version > 6.30 (contact Rockwell Automation for exact fixed version)

  1. 1. Navigate to the Rockwell Automation Product Compatibility and Download Center (PCDC) at https://compatibility.rockwellautomation.com/
  2. 2. Search for FactoryTalk Linx and identify available versions newer than 6.30
  3. 3. Download and install the latest available version of FactoryTalk Linx that includes the security fix for CVE-2023-29464
  4. 4. Verify the installation by checking the product version in FactoryTalk Administration Console
  5. 5. Test critical industrial communication workflows to ensure normal operation
Caveat Before upgrading, review release notes for any compatibility changes with PanelView Plus firmware or connected PLCs

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Factorytalk Linx Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-29464 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data