MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices have a zyad1234 password for the zyad1234 account, which is equivalent to root and undocumented.Referenceshttps://packetstormsecurity.com/files/144805/MitraStar-DSL-100HN-T1-GPT-2541GNAC-Privilege-Escalation.htmlhttp://www.securityfocus.com/bid/101672https://www.exploit-db.com/exploits/43061/