System Command Injection in network.set_auth_settings in Buffalo TS5600D1206 version 3.70-0.10 allows attackers to execute system commands via the adminUsername and adminPassword parameters.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-5268
https://blog.securityevaluators.com/buffalo-terastation-ts5600d1206-nas-cve-disclosure-ab5d159f036d