NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l2tpdconfigshowcgi.c, ipsecshowcgi.c, and modvpnremote/plan.json read handlers. Attackers can query l2tpdconfigshow.cgi to expose stored IPsec PSK and RSA key material.

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in the DHCP dynamic IP display and ARP bind list display components handling hostname fields. A LAN-based attacker can inject malicious script through these hostname fields, which is later rendered by networkconfig.js and networksecurity.js in the web management interface.

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in DHCP static IP and IP ACL management pages, including dhcpaddstaticipcgi, dhcpstaticipshowcgi, ipaclsetcgi, and ipaclshowcgi. Attackers can inject persistent malicious scripts through these components to compromise the web management interface for other users.'

Netcore NR255-V version 1.5.130703 contains an out-of-bounds read vulnerability in the mtdwrite pre-flash validation routine triggered by short firmware uploads. Attackers can upload a truncated firmware image via putfilecgi.c to trigger out-of-bounds reads across main.c, checkimageuuid.c, and oemMD5Update.c.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in modvpnremote/plan.json, pptpdusershow.cgi, pptpclientconfigshow.cgi, and l2tpdusershow.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials.

Netcore NR255-V version 1.5.130703 contains a null pointer dereference vulnerability in routepolicyadd.cgi caused by a missing exitport parameter. Attackers can send requests lacking the exitport field to trigger the null pointer dereference, resulting in a denial of service.

Netcore NR255-V firmware version 1.5.130703 builds root-run command lines from unquoted user-supplied DDNS input in DDNSsetcgi.c and related ddnsProc.c components, enabling os command argument injection. Attackers can exploit the unsanitized parameters to inject additional command arguments executed with root privileges.

Netcore NR255-V version 1.5.130703 contains a null pointer dereference vulnerability in the QoS setter CGI handlers filterconndelcgi.c and grepriosetcgi.c due to unchecked atoi() results. An attacker can trigger the flaw by supplying crafted input to these handlers, causing a denial of service.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in the modqosbandwidth plan.json handling within filterconnsdumpcgi.c and IGDCgiCall.c. Authenticated users with broad roles can access these QoS read routes to obtain live network telemetry beyond their intended privilege level.

NR255-V version 1.5.130703 fails to sanitize QoS rule names before they are parsed via eval() in qosxianzaddcgi, qosxianzshowcgi, qosfilteraddcgi, and qosfiltershowcgi handlers. An attacker can inject persistent script code through crafted QoS rule name input that executes when the stored data is later processed by the affected handlers.'

Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in wakeupset.cgi caused by unbounded tokenization of MAC and ID input. Attackers can supply crafted MAC and ID values to the affected endpoint to overflow the stack buffer and corrupt program memory.

Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in ntoolstcpdumpstartset.cgi caused by an unsized sprintf call when processing form values. An attacker can submit crafted input to this cgi endpoint to overflow the stack buffer and potentially execute arbitrary code.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in the userpassshow.cgi component. Low-privilege attackers can exploit this flaw via uiconfig2.xml and misc.js to disclose router credentials.

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in ddnswanlistshow.cgi caused by unsafe eval() handling of DDNS data. Attackers can inject malicious script through the DDNS configuration path, leading to persistent execution when the affected page is viewed.

Netcore NR255-V firmware version 1.5.130703 contains a sensitive information disclosure vulnerability in the ddnswanlistshow.cgi endpoint and related DDNSsetcgi, IGDGetCgiHandler, and IGDCgiCall components. Attackers who reach this CGI handler can obtain plaintext DDNS credentials, exposing sensitive account information.

Netcore NR255-V firmware version 1.5.130703 contains a cross-site request forgery vulnerability affecting the wanconfigsetcgi, wannumsetcgi, and lanipchangecgi endpoints. Attackers can craft forged requests to trick authenticated administrators into modifying WAN or LAN network configuration settings without consent.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in the audit endpoints handled by l7webauthlogdumpcgi.c, auditgetcgi.c, and moddispatchauth/plan.json. Attackers can query these audit components to obtain other users' session and browsing history data across sessions.

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 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 vulnerability was found in Netcore NBR1005GPEV2, NBR200V2 and B6V2 up to 20250508 and classified as critical. This issue affects the function toolsping of the file /usr/bin/networktools. 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 passwdset 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.

A vulnerability, which was classified as critical, was found in Netcore NBR1005GPEV2, B6V2, COVER5, NAP830, NAP930, NBR100V2, NBR200V2 and POWER13 up to 20250508. This affects an unknown part of the file /www/cgi-bin/ of the component Query String Handler. The manipulation leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.