CVE-2023-7234Network attack vector

Log manipulation via unsanitized client descriptions

Published Jan 16, 2024 · Updated Jun 2, 2025

Log injection in Integration Objects OPC UA Server Toolkit all versions allows remote attackers to alter logs via client descriptions. After a client connects, the toolkit writes the client-controlled description field into a log message without neutralizing log control characters. Anonymous OPC UA client access is supported, so no authentication is required; the bounded impact is forged or misleading log entries.

CVSS severity5.3
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Log injection in Integration Objects OPC UA Server Toolkit all versions allows remote attackers to alter logs via client descriptions. After a client connects, the toolkit writes the client-controlled description field into a log message without neutralizing log control characters. Anonymous OPC UA client access is supported, so no authentication is required; the bounded impact is forged or misleading log entries.

The record

CVE
CVE-2023-7234
Published
Jan 16, 2024
Updated
Jun 2, 2025
Vendor
Integration Objects
Product
OPC UA Server Toolkit
Classifications
CWE-117
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 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=all versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Integration Objects · OPC UA Server Toolkitversion=all versions

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A: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-117Improper Output Neutralization for Logs

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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