Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by supplying an oversized destHost parameter to the ipFilterList=mod action in netis.cgi. Attackers can exploit widthless sscanf conversions that copy user-supplied input into fixed-size stack buffers before authentication is verified, achieving remote code execution as root due to the Boa web server executing the CGI environment with root privileges.

Netis NC63 router firmware V3.0.0.3327 contains an unauthenticated firmware update vulnerability that allows unauthenticated attackers to submit unsigned firmware images by exploiting a missing authentication enforcement flaw in the Boa web server and netis.cgi CGI dispatcher. Attackers can send a multipart POST request to /cgi-bin/uploadfw.cgi without a valid session cookie, bypassing authentication because Boa grants access to any path containing '.cgi' regardless of cookie validation, and netis.cgi reads but does not enforce the authentication state before invoking the firmware update handler, which accepts images validated only by a forgeable additive checksum and static product strings rather than a cryptographic signature, potentially enabling persistent router compromise.

Netis AC1200 Router NC21 V4.0.1.4296 contains a hard-coded root credential stored in /etc/shadow.sample. The password for the root account is set to the trivially weak value root, allowing an attacker with access to the device to authenticate as root and gain full control of the underlying operating system.

Netis AC1200 Router NC21 V4.0.1.4296 is vulnerable to unauthenticated command injection via the /cgi-bin/skkset.cgi endpoint. The password and newpwdconfirm POST parameters are passed directly to the underlying OS shell without sanitization. An attacker can inject arbitrary shell commands by wrapping them in backticks () and encoding them in base64. Because the endpoint requires no authentication, any device on the LAN can achieve full Remote Code Execution on the router's operating system with a single HTTP POST request.

Netis WF2780 v2.1.40144 was discovered to contain a command injection vulnerability via the wpsapssid5g parameter

Netis WF2780 v2.1.40144 was discovered to contain a command injection vulnerability via the configsequence parameter in otherpara of cgitest.cgi.

Netis WF2419 is vulnerable to authenticated Remote Code Execution (RCE) as root through the router Web management page. The vulnerability has been found in firmware version V1.2.31805 and V2.2.36123. After one is connected to this page, it is possible to execute system commands as root through the tracert diagnostic tool because of lack of user input sanitizing.

Netis AC1200 Router NC21 V4.0.1.4296 exposes a CGI endpoint /cgi-bin/skkget.cgi that returns the entire router configuration as a JSON response with no authentication required. Any attacker on the LAN can send a single HTTP GET request and instantly retrieve administrator credentials, WiFi passwords, PPPoE credentials, DDNS credentials, and a full map of all connected devices.

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.

Netis ADSL Router DL4322D firmware RTK 2.1.1 contains a buffer overflow vulnerability in the embedded FTP service that allows an authenticated remote user to trigger a denial of service. After logging in to the FTP service, sending an FTP command such as ABOR with an excessively long argument causes the service, and in practice the router, to crash or become unresponsive, resulting in a loss of availability for the device and connected users.

Netis E1+ version 1.2.32533 contains a hardcoded root account vulnerability that allows unauthenticated attackers to access the device with predefined credentials. Attackers can leverage the embedded root account with a crackable password to gain full administrative access to the network device.

Netis E1+ 1.2.32533 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve WiFi passwords through the netcoreget.cgi endpoint. Attackers can send a GET request to the endpoint to extract sensitive network credentials including SSID and WiFi passwords in plain text.

A vulnerability was determined in Netis WF2419 1.2.29433. This vulnerability affects unknown code of the file /index.htm of the component Wireless Settings Page. This manipulation of the argument SSID with the input <img/src/onerror=prompt(8)> causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

A buffer overflow vulnerability has been discovered in the Netis WF2880 v2.1.40207 in the FUN004743f8 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wlsecset in the payload, which may cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN00475e1c function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wdskeywep in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN00470c50 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wlmacfilterset in the payload, which can cause the program to crash and lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN0046f984 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wladvancedset in the payload, which can cause the program to crash and lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN0046ed68 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wpsset in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN00473154 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wlsecset5g and wlsecrpset5g in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A null pointer dereference vulnerability was discovered in Netis WF2780 v2.2.35445. The vulnerability exists in the FUN0048a728 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the CONTENTLENGTH variable, causing the program to crash and potentially leading to a denial-of-service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN00471994 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wlbaseset in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the Function00465620 of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of specifyparame in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in Netis WF2880 v2.1.40207 in the FUN00476598 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wlbaseset5g in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A buffer overflow vulnerability has been discovered in the Netis WF2880 v2.1.40207 in the FUN0047151c function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the value of wdsset in the payload, which can cause the program to crash and potentially lead to a Denial of Service (DoS) attack.

A null pointer dereference vulnerability was discovered in Netis WF2880 v2.1.40207. The vulnerability exists in the FUN004904c8 function of the cgitest.cgi file. Attackers can trigger this vulnerability by controlling the environment variable value CONTENTLENGTH, causing the program to crash and potentially leading to a denial-of-service (DoS) attack.

A vulnerability classified as critical has been found in Netis WF-2404 1.1.124EN. Affected is an unknown function of the file /etc/passwd. The manipulation with the input Realtek leads to use of default password. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Netis WF-2404 1.1.124EN. It has been declared as critical. This vulnerability affects unknown code of the component UART. The manipulation leads to hardware allows activation of test or debug logic at runtime. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Netis WF-2404 1.1.124EN. It has been rated as problematic. This issue affects some unknown processing of the file /еtc/passwd. The manipulation leads to use of weak hash. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability classified as problematic was found in Netis WF-2404 1.1.124EN. Affected by this vulnerability is an unknown functionality of the component BusyBox Shell. The manipulation leads to cleartext storage of sensitive information. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as problematic, was found in Netis WF2780 2.1.41925. This affects an unknown part of the component Wireless 2.4G Menu. The manipulation of the argument SSID leads to cross site scripting. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.