Missing authentication for critical function in DAP-1880AC firmware version 1.21 and earlier allows a remote attacker to login to the device as an authenticated user without the access privilege via unspecified vectors.

DAP-1880AC firmware version 1.21 and earlier allows a remote authenticated attacker to execute arbitrary OS commands by sending a specially crafted request to a specific CGI program.

Improper following of a certificate's chain of trust vulnerability in DAP-1880AC firmware version 1.21 and earlier allows a remote authenticated attacker to gain root privileges via unspecified vectors.

Improper access control vulnerability in DAP-1880AC firmware version 1.21 and earlier allows a remote authenticated attacker to bypass access restriction and to start a telnet service via unspecified vectors.