Multiple cross-site scripting (XSS) vulnerabilities in unspecified web applications in Siemens WinCC 7.0 SP3 before Update 2 allow remote attackers to inject arbitrary web script or HTML via vectors involving special characters in parameters.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-2581
http://www.us-cert.gov/control_systems/pdf/ICSA-12-158-01.pdf