Huawei noticed that on May 29, 2015, security researchers Ivan Sanz de Castro, Alvaro Folgado Rueda, and Jose Antonio Rodriguez Garcia from Universidad Europea de Madrid disclosed security vulnerabilities regarding Huawei HG553 and HG556a on Packet Storm Website. Huawei immediately launched an investigation.
The investigation is still ongoing. Huawei PSIRT will keep updating the SN and will give the related views as soon as possible. Please stay tuned.