CVE-2023-29464Network attack vector

Memory disclosure and service hang via oversized packets

Published Oct 13, 2023 · Updated Sep 17, 2024

Improper input validation in Rockwell Automation FactoryTalk Linx 6.20 and 6.30 allows remote attackers to read memory or hang CIP communications. The communication service accepts a packet-declared size larger than its buffer, disclosing adjacent memory; a sufficiently large size leaves CIP unresponsive. Reaching either effect requires only network access to the PanelView Plus-hosted service, with no authentication or user interaction.

CVSS severity8.2
High
EPSS probability9.60%
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 FactoryTalk Linx 6.20 and 6.30 allows remote attackers to read memory or hang CIP communications. The communication service accepts a packet-declared size larger than its buffer, disclosing adjacent memory; a sufficiently large size leaves CIP unresponsive. Reaching either effect requires only network access to the PanelView Plus-hosted service, with no authentication or user interaction.

The record

CVE
CVE-2023-29464
Published
Oct 13, 2023
Updated
Sep 17, 2024
Vendor
Rockwell Automation
Product
FactoryTalk Linx
Classifications
CWE-20, CWE-787, CAPEC-10, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=6.20
  2. Affected versionversion=6.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rockwell Automation · FactoryTalk Linxversion=6.20; version=6.30

Published CVSS scores

8.2Rockwell AutomationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
CWE-787Out-of-bounds Write
CAPEC-10Buffer Overflow via Environment Variables
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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