The firewall module on the Huawei Quidway Service Process Unit (SPU) board S7700, S9300, and S9700 on Huawei Campus Switch devices allows remote authenticated users to obtain sensitive information from the high-priority security zone by leveraging access to the low-priority security zone.
http://www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-261458.htm