The NCCIC has published an advisory on an improper input validation vulnerability in Siemens SINAMICS PERFECT HARMONY GH180 Fieldbus Network. Numerous products and versions of the products are affected. Successful exploitation of this vulnerability could cause a denial-of-service condition. Siemens recommends users upgrade to NXGpro control. The NCCIC has also provided a series of measures to address the vulnerability. Read the advisory at NCCIC/ICS-CERT.