Netcore

A remote code execution vulnerability exists in multiple Netcore and Netis routers models with firmware released prior to August 2014 due to the presence of an undocumented backdoor listener on UDP port 53413. Exact version boundaries remain undocumented. An unauthenticated remote attacker can send specially crafted UDP packets to execute arbitrary commands on the affected device. This backdoor uses a hardcoded authentication mechanism and accepts shell commands post-authentication. Some device models include a non-standard implementation of the `echo` command, which may affect exploitability.

A security flaw has been discovered in Netcore Power 15AX up to 3.0.0.6938. Affected by this issue is the function setTools of the file /bin/netis.cgi of the component Diagnostic Tool Interface. Performing a manipulation of the argument IpAddr results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Netcore NBR1005GPEV2, NBR200V2 and B6V2 up to 20250508 and classified as critical. This issue affects the function tools_ping of the file /usr/bin/network_tools. The manipulation of the argument url leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

A vulnerability has been found in Netcore NBR1005GPEV2, B6V2, COVER5, NAP830, NAP930, NBR100V2 and NBR200V2 up to 20250508 and classified as critical. This vulnerability affects the function passwd_set of the file /usr/bin/routerd of the component HTTP Header Handler. The manipulation of the argument pwd leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.