LAS VEGAS—A security researcher has uncovered a slew of vulnerabilities in Siemens industrial control systems, including a hardcoded password, that would let attackers reprogram the systems with malicious commands to sabotage critical infrastructures and even lock out legitimate administrators.
The vulnerabilities exist in several models of Siemens programmable logic controllers, or PLCs—the same devices that were targeted by the Stuxnet superworm and that are used in nuclear facilities and other critical infrastructures, as well as in commercial manufacturing plants that make everything from pharmaceuticals to automobiles.
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