Totolink EX1200L router is vulnerable to Buffer Overflow in the login functionality in cgi-bin/cstecgi.cgi endpoint. This vulnerability could be exploited to cause the program to crash and to execute code remotely. This allows the attacker to perform actions as root including reading and editing data, as well as bricking the router.

Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 9.3.5u.6146B20201023 but may also affect other versions.

TOTOLINK N200RE V5 was discovered to contain a command injection vulnerability via the macstr and bandstr parameters in the formMapDelDevice function.

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the stunMinAlive parameter to /cgi-bin/cstecgi.cgi.

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the stunMaxAlive parameter to /cgi-bin/cstecgi.cgi.

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the stunEnable parameter to /cgi-bin/cstecgi.cgi.

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the stunServerAddr parameter to /cgi-bin/cstecgi.cgi.

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the stun-pass parameter to /cgi-bin/cstecgi.cgi.

TOTOlink A3600R v5.9c.4959 contains a buffer overflow vulnerability in the setAppEasyWizardConfig interface of /lib/cstemodules/app.so. The vulnerability occurs because the rootSsid parameter is not properly validated for length, allowing remote attackers to trigger a buffer overflow, potentially leading to arbitrary code execution or denial of service.

TOTOLINK X5000R v9.1.0cu2415B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable. The ip parameter is retrieved via websGetVar and passed to a ping command through CsteSystem without validating if the input starts with a hyphen (-). This allows remote authenticated attackers to inject arbitrary command-line options into the ping utility, potentially leading to a Denial of Service (DoS) by causing excessive resource consumption or prolonged execution.

TOTOLINK A950RG V4.1.2cu.5204B20210112 contains a buffer overflow vulnerability in the setUrlFilterRules interface of /lib/cstemodules/firewall.so. The vulnerability occurs because the url parameter is not properly validated for length, allowing remote attackers to trigger a buffer overflow, potentially leading to arbitrary code execution or denial of service.

A stack-based buffer overflow vulnerability was identified in TOTOLINK A950RG V4.1.2cu.5204B20210112. The flaw exists in the setIpQosRules interface of /lib/cstemodules/firewall.so where the comment parameter is not properly validated for length.

A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204B20210112. The issue resides in the setRadvdCfg interface of the /lib/cstemodules/ipv6.so module. The function fails to properly validate the length of the user-controlled radvdinterfacename parameter, allowing remote attackers to trigger a stack buffer overflow.

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in TOTOLINK X6000R allows OS Command Injection.This issue affects X6000R: through V9.4.0cu.1498B20250826.

A security flaw has been discovered in Totolink A3600R 5.9c.4959. This issue affects the function setAppEasyWizardConfig in the library /lib/cstemodules/app.so. Performing a manipulation of the argument apcliSsid results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

A vulnerability was detected in Totolink A7000R 4.1cu.4154. This affects the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument pluginname results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.

A vulnerability was detected in Totolink NR1800X 9.1.0u.6279B20210910. Impacted is the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

A security flaw has been discovered in Totolink LR350 9.3.5u.6369B20220309. This vulnerability affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

A vulnerability was identified in Totolink LR350 9.3.5u.6369B20220309. This affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ssid leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

A vulnerability was determined in Totolink LR350 9.3.5u.6369B20220309. Affected by this issue is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ssid causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

A vulnerability was found in Totolink LR350 9.3.5u.6369B20220309. Affected by this vulnerability is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.

A weakness has been identified in TOTOLINK A3700R 9.1.2u.5822B20200513. This affects the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument ssid can lead to buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

A vulnerability has been found in TOTOLINK T10 4.1.8cu.5083B20200521. This affects the function sprintf of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument loginAuthUrl leads to stack-based buffer overflow. The attack may be performed from remote.

TOTOLINK A3300R V17.0.0cu.557B20221024 and N200RE V9.3.5u.6448B20240521 and V9.3.5u.6437B20230519 are vulnerable to Incorrect Access Control. Attackers can send payloads to the interface without logging in (remote).

A vulnerability was determined in TOTOLINK X5000R 9.1.0cu.2089B20211224. Affected by this issue is the function snprintf of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user. This manipulation of the argument User causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.

TOTOLINK N300RT wireless router firmware versions prior to V3.4.0-B20250430 (discovered in V2.1.8-B20201030.1539) contain an OS command injection vulnerability in the Boa formWsc handling functionality. An unauthenticated attacker can send specially crafted requests to trigger command execution via the targetAPSsid request parameter.

A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557B20221024. This impacts the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. The manipulation of the argument lang results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.

A security vulnerability has been detected in TOTOLINK N600R up to 4.3.0cu.7866B20220506. This impacts the function setWiFiBasicConfig of the file /cgi-bin/cstecgi.cgi of the component HTTP Request Handler. Such manipulation of the argument wepkey leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

TOTOLINK X18 V9.1.0cu.2053B20230309 was discovered to contain a command injection vulnerability via the agentName parameter in the setEasyMeshAgentCfg function.

TOTOLINK X18 V9.1.0cu.2053B20230309 was discovered to contain a command injection vulnerability via the mac parameter in the setEasyMeshAgentCfg function.