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simatic s7
About this tag
The simatic s7 tag covers discussions about Siemens SIMATIC S7 programmable logic controllers, with a focus on security vulnerabilities. Recent content highlights cross-site scripting (XSS) flaws in the web administration interfaces of S7-1500, ET 200SP, Drive Controller, Software Controller, SIPLUS, and PLCSIM Advanced products. These JavaScript injection vulnerabilities, disclosed by Siemens and CISA in May 2026, affect the embedded web server of these industrial controllers. Siemens has released firmware fixes for some product lines, while others have no current or planned fix. The tag emphasizes that the web-based management surface of simatic s7 devices has become a critical part of the industrial control system attack surface, requiring operators to apply patches and monitor for security updates.
Siemens and CISA warned on May 12 and May 14, 2026, respectively, that the web server in a broad set of SIMATIC S7 PLCs contains three cross-site scripting vulnerabilities affecting S7-1500, ET 200SP, Drive Controller, Software Controller, SIPLUS, and PLCSIM Advanced products. The flaw class is...