Siemens PLC Trace Import XSS Allows Browser JS Execution & PLC Ops
CVE-2026-63350 Published on October 13, 2026
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 users browser session and perform PLC operations through the web server within the scope of the users authorization.
Weakness Type
What is an Eval Injection Vulnerability?
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval"). This may allow an attacker to execute arbitrary code, or at least modify what code can be executed.
CVE-2026-63350 has been classified to as an Eval Injection vulnerability or weakness.
Products Associated with CVE-2026-63350
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Affected Versions
Siemens SIMATIC Drive Controller CPU 1504D TF:- Before * is affected.
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