Publication Date:
Last Update:
Current Version: V1.1
CVSS v3.1 Base Score: 5.3
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Affected Product and Versions Remediation

All versions < V7.5
affected by CVE-2023-52891

All versions < V7.5
affected by CVE-2023-52891

All versions
affected by CVE-2023-52891
Currently no fix is planned

All versions
affected by CVE-2023-52891
Currently no fix is planned

All versions
affected by CVE-2023-52891
Currently no fix is planned

All versions < V11.1
affected by CVE-2023-52891
  • CVE-2023-52891:
    • Disable the OPC UA server in the affected product, if possible and OPC UA is not used
    • Restrict access to the OPC UA interface to trusted clients

Product-specific remediations or mitigations can be found in the section Affected Products and Solution.
Please follow the General Security Recommendations.

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

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This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

CVSS v3.1 Base Score 5.3
CVSS v3.1 Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-1325: Improperly Controlled Sequential Memory Allocation

For more information regarding the impact of this issue to the Unified Automation .NET based OPC UA Server SDK, refer to entry #25 in https://www.unified-automation.com/support/security-process.html.

For more information regarding the related CVE-2023-27321 refer to https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-27321.pdf.

https://www.siemens.com/cert/advisories
V1.0 (2024-07-09): Publication Date
V1.1 (2024-09-10): Updated currently no fix planned for SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor