Huawei VP9660 V500R002C10 has a uncontrolled format string vulnerability when the license module output the log information. An authenticated local attacker could exploit this vulnerability to cause a denial of service.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-8298
http://www.huawei.com/en/psirt/security-advisories/2017/huawei-sa-20171206-01-license-en