Publication Date:
Last Update:
Current Version: V2.1
CVSS v3.1 Base Score: 7.5
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Affected Product and Versions Remediation

All versions < V8.1 SP1
affected by CVE-2023-28831

All versions < V2.2
affected by CVE-2023-28831

All versions < V2.2
affected by CVE-2023-28831

All versions
affected by CVE-2023-28831
Currently no fix is available
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All versions
affected by CVE-2023-28831
Currently no fix is planned
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Open for details
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Currently no fix is planned
Expand children
Currently no fix is planned
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All versions < V5.0 Update 2
affected by CVE-2023-28831
Update to V5.0 Update 2 or later version

All versions < V8.1 SP1
affected by CVE-2023-28831
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All versions < V2.0.0.1
affected by CVE-2023-28831
Update to V2.0.0.1 or later version
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Open for details

All versions < V5.0.0.0
affected by CVE-2023-28831
Update to V5.0.0.0 or later version
Expand children
Open for details
  • Disable the OPC UA feature, if not used

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 7.5
CVSS v3.1 Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CWE CWE-190: Integer Overflow or Wraparound

https://www.siemens.com/cert/advisories
V1.0 (2023-09-12): Publication Date
V1.1 (2023-10-10): Added additional vulnerable products SIMATIC WinCC OA V3.17, SIMATIC WinCC OA V3.18, and SIMATIC WinCC OA V3.19; clarified that both ANSI C and C++ implementations are affected
V1.2 (2023-11-14): Added additional vulnerable products SIMATIC BRAUMAT / SISTAR
V1.3 (2023-12-12): Added SIMATIC Comfort/Mobile RT, SIMATIC IPC DiagMonitor, SIMATIC WinCC Unified OPC UA Client/Server, and SIMATIC PCS neo as affected products; removed unaffected devices: 6ES7513-1RL00-0AB0, 6ES7513-1RM03-0AB0, 6ES7515-2RM00-0AB0, 6ES7515-2RN03-0AB0, 6AG1515-2RM00-7AB0, 6AG2515-2RM00-4AB0, 6ES7517-3HP00-0AB0, 6AG1517-3HP00-4AB0, 6ES7518-4JP00-0AB0, 6AG1518-4JP00-4AB0; added fix for SIMATIC S7-PLCSIM Advanced
V1.4 (2024-01-09): No fix planned for SIMATIC IPC DiagMonitor
V1.5 (2024-02-13): Added fix for SIMATIC WinCC Unified OPC UA Client/Server; Added SIMATIC PCS 7 V9.1 as affected; Added specific mitigation measure for CVE-2023-28831 (disable OPC UA)
V1.6 (2024-03-12): Removed unaffected device SIMATIC S7-1200 CPU family (incl. SIPLUS variants), added SIMATIC WinCC (Classic and Runtime Professional) and Totally Integrated Automation Portal to the list of affected devices, no fix planned for SIMATIC PCS 7 V9.1
V1.7 (2024-04-09): Added SIMATIC NET PC Software as affected product; added fix for SIMATIC NET PC Software V17, V18; added fix for SIMATIC S7-1500 Software Controller V3; removed unaffected product TIA Portal
V1.8 (2024-05-14): Added fix for SIMATIC ET 200SP Open Controller CPU 1515SP PC2 V30
V1.9 (2024-06-11): Added fix for SIMATIC WinCC Runtime Professional V19
V2.0 (2024-07-09): Added fix for SIMATIC WinCC V8.0
V2.1 (2024-10-08): No fix planned for SIMATIC PCS neo V4.0; removed SIMATIC PCS neo V4.1 as not affected