Huawei Email APP Vicky-AL00 smartphones with software of earlier than VKY-AL00C00B171 versions has a stored cross-site scripting vulnerability. A remote attacker could exploit this vulnerability to send email that storing malicious code to a smartphone and waiting for a user to access this email that triggers execution of the code. An exploit could allow the attacker to execute arbitrary script code on the affected device.
http://www.huawei.com/en/psirt/security-advisories/2017/huawei-sa-20170908-01-email-en