Unauthorized Access Vulnerability in Digital Programmable Subscriber Switch of NSN9000i Series IPPBX System of Shenzhen Guowei Saina Technology Co.

NSN9000i series IPPBX system is a new-generation hybrid IPPBX system developed by Xena Technology based on the latest IP technology and domestic market. The system combines the digital program-controlled subscriber switch platform developed by SANA Technology and the popular Asterisk application...