The web server on Siemens SCALANCE X-200IRT switches with firmware before 5.2.0 allows remote attackers to hijack sessions via unspecified vectors.
https://cert-portal.siemens.com/productcert/pdf/ssa-954136.pdf
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-954136.pdf