Cross-site scripting (XSS) vulnerability in the integrated web server on the Siemens Climatix BACnet/IP communication module with firmware before 10.34 allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
https://ics-cert.us-cert.gov/advisories/ICSA-15-176-01
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-142512.pdf