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
PRODUCT DESCRIPTION
SIMATIC Drive Controllers have been designed for the automation of production machines, combining the functionality of a SIMATIC S7-1500 CPU and a SINAMICS S120 drive control.
SIMATIC ET 200SP Open Controller is a PC-based version of the SIMATIC S7-1500 Controller including optional visualization in combination with central I/Os in a compact device.
SIMATIC S7-1500 CPU products have been designed for discrete and continuous control in industrial environments such as manufacturing, food and beverages, and chemical industries worldwide.
SIMATIC S7-1500 MFP CPUs provide functionality of standard S7-1500 CPUs with the possibility to run C/C++ Code within the CPU-Runtime for execution of own functions / algorithms implemented in C/C++ and an additional second independent runtime environment to execute C/C++ applications parallel to the STEP 7 program if required.
SIMATIC S7-1500 ODK CPUs provide functionality of standard S7-1500 CPUs but additionally provide the possibility to run C/C++ Code within the CPU-Runtime for execution of own functions / algorithms implemented in C/C++. They have been designed for discrete and continuous control in industrial environments such as manufacturing, food and beverages, and chemical industries worldwide.
SIMATIC S7-1500 Software Controller is a SIMATIC software controller for PC-based automation solutions.
SIMATIC S7-PLCSIM Advanced simulates S7-1200, S7-1500 and a few other PLC derivatives. Includes full network access to simulate the PLCs, even in virtualized environments.
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.
Vulnerability CVE-2026-63350
Affected devices do not properly restrict executable content contained in imported trace files.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Vulnerability CVE-2026-63351
Affected devices do not properly validate and sanitize visual properties of calculated signals contained in imported CSV trace files before rendering them on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63352
Affected devices do not properly sanitize calculated signal data contained in imported CSV trace files before rendering it on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63353
Affected devices do not properly sanitize comment fields contained in imported trace files before rendering them on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63354
Affected devices do not properly validate and sanitize visual marker data contained in imported CSV trace files before rendering it on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63355
Affected devices do not properly sanitize signal names contained in imported CSV trace files before rendering them in selection menus on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Attacker-controlled JavaScript could be executed in the user’s browser session when the user subsequently interacts with an affected selection menu.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63356
Affected devices do not properly sanitize calculated signal names contained in imported CSV trace files before including them in error messages on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Attacker-controlled JavaScript could be executed in the user’s browser session when the resulting error message is displayed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability CVE-2026-63357
Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page.
This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ADDITIONAL INFORMATION
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT:
https://www.siemens.com/cert/advisories