There is a weak algorithm vulnerability in some Huawei products. The affected products use weak algorithms by default. Attackers may exploit the vulnerability to cause information leaks.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-9018
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191204-01-vrp-en