TOTOLINK vulnerabilities
We track 806 vulnerabilities in TOTOLINK products across 60+ products. 806 are rated high or critical, and none are known to be exploited. The most recent was published on November 7, 2026.
Latest TOTOLINK vulnerabilities
- 9.1 Critical severity
n200re_v5_firmware: Improper Access Control
Totolink N200RE_V5 V9.3.5u.6255_B20211224 is vulnerable to Incorrect Access Control. The device allows remote attackers to obtain Wi-Fi system information, such as Wi-Fi SSID and Wi-Fi password, without logging into the management page.
- 9.8 Critical severity
X2000R: Out-of-bounds Write
A vulnerability was found in Totolink X2000R 1.0.0-B20221212.1452. It has been declared as critical. This vulnerability affects the function formTmultiAP of the file /bin/boa of the component HTTP POST Request Handler. The manipulation of the argument submit-u
- 9.8 Critical severity
T6: Buffer Copy without Checking Size of Input
A vulnerability was found in Totolink T6 4.1.9cu.5241_B20210923. It has been classified as critical. This affects the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument v41 l
- 9.8 Critical severity
NR1800X: Stack-based Buffer Overflow
A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. T
- 9.8 Critical severity
N350RT: Stack-based Buffer Overflow
A vulnerability has been found in Totolink N350RT 9.3.5u.6139_B202012 and classified as critical. Affected by this vulnerability is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument http_host leads to stack-based buffer
- 7.2 High severity
N350RT: Stack-based Buffer Overflow
A vulnerability, which was classified as critical, was found in Totolink N350RT 9.3.5u.6139_B202012. Affected is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. It is poss
- 9.8 Critical severity
N200RE: Improper Neutralization of Special Elements used in an OS Command
A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216. It has been declared as critical. Affected by this vulnerability is the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument command leads to os command
- 9.8 Critical severity
N200RE: Improper Neutralization of Special Elements used in an OS Command
A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216. It has been classified as critical. Affected is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to os command injection. It is possible
- 9.8 Critical severity
N200RE: Improper Neutralization of Special Elements used in an OS Command
A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216 and classified as critical. This issue affects the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to os command injection. The att
- 9.8 Critical severity
N200RE: Improper Neutralization of Special Elements used in an OS Command
A vulnerability has been found in Totolink N200RE 9.3.5u.6139_B20201216 and classified as critical. This vulnerability affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument host_time leads to os command injecti
- 9.8 Critical severity
LR1200GB: Improper Neutralization of Special Elements used in an OS Command
A vulnerability, which was classified as critical, was found in Totolink LR1200GB 9.1.0u.6619_B20230130. This affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument hostName leads to os command injection. It is possib
- 9.8 Critical severity
LR1200GB: Improper Neutralization of Special Elements used in an OS Command
A vulnerability, which was classified as critical, has been found in Totolink LR1200GB 9.1.0u.6619_B20230130. Affected by this issue is the function setUssd of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ussd leads to os command injection.
- 9.8 Critical severity
LR1200GB: Improper Neutralization of Special Elements used in an OS Command
A vulnerability classified as critical was found in Totolink LR1200GB 9.1.0u.6619_B20230130. Affected by this vulnerability is the function setUploadSetting of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to os command injecti
- 9.8 Critical severity
LR1200GB: Improper Neutralization of Special Elements used in an OS Command
A vulnerability classified as critical has been found in Totolink LR1200GB 9.1.0u.6619_B20230130. Affected is the function setOpModeCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument hostName leads to os command injection. It is possible to
- 8.8 High severity
LR1200GB: Improper Neutralization of Special Elements used in a Command
A vulnerability was found in Totolink LR1200GB 9.1.0u.6619_B20230130. It has been rated as critical. This issue affects the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to command injection. The
- 8.8 High severity
N350RT: Out-of-bounds Write
A vulnerability, which was classified as critical, has been found in Totolink N350RT 9.3.5u.6139_B20201216. Affected by this issue is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation o
- 8.8 High severity
N350RT: Out-of-bounds Write
A vulnerability classified as critical was found in Totolink N350RT 9.3.5u.6139_B20201216. Affected by this vulnerability is the function main of the file /cgi-bin/cstecgi.cgi?action=login&flag=1 of the component HTTP POST Request Handler. The manipulation of
- 9.8 Critical severity
X2000R_V2: Out-of-bounds Write
A vulnerability classified as critical was found in Totolink X2000R_V2 2.0.0-B20230727.10434. This vulnerability affects the function formTmultiAP of the file /bin/boa. The manipulation leads to buffer overflow. VDB-249742 is the identifier assigned to this vu
- 8.8 High severity
N350RT: Stack-based Buffer Overflow
A vulnerability was found in Totolink N350RT 9.3.5u.6139_B20201216. It has been rated as critical. This issue affects some unknown processing of the file /cgi-bin/cstecgi.cgi?action=login&flag=ie8 of the component HTTP POST Request Handler. The manipulation le
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in an OS Command
TOTOLINK X6000R v9.4.0cu.852_B20230719 was discovered to contain a remote command execution (RCE) vulnerability via the component /cgi-bin/cstecgi.cgi.
- 9.8 Critical severity
A7100RU: Buffer Copy without Checking Size of Input
A vulnerability, which was classified as critical, has been found in Totolink A7100RU 7.4cu.2313_B20191024. Affected by this issue is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation o
- 9.8 Critical severity
Ex1800t Firmware: Improper Control of Generation of Code
TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘opmode’ parameter of the setWiFiApConfig interface of the cstecgi .cgi.
- 9.8 Critical severity
Ex1800t Firmware: Improper Neutralization of Special Elements used in a Command
TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the setRebootScheCfg interface of the cstecgi .cgi.
- 9.8 Critical severity
ex1800t_firmware: Improper Control of Generation of Code
TOTOLINX EX1800T v9.1.0cu.2112_B20220316 is vulnerable to arbitrary command execution in the ‘enable parameter’ of the setDmzCfg interface of the cstecgi .cgi
- 9.8 Critical severity
ex1800t_firmware: Improper Neutralization of Special Elements used in a Command
TOTOLINK EX1800T V9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the lanSecDns parameter’ of the setLanConfig interface of the cstecgi .cgi
- 9.8 Critical severity
a3700r_firmware: Improper Neutralization of Special Elements used in an OS Command
There is an arbitrary command execution vulnerability in the setDiagnosisCfg function of the cstecgi .cgi of the TOTOlink A3700R router device in its firmware version V9.1.2u.5822_B20200513.
- 9.8 Critical severity
Ex1800t Firmware: Improper Neutralization of Special Elements used in an OS Command
TOTOLINK EX1800T 9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the apcliChannel parameter of the setWiFiExtenderConfig interface of the cstecgi.cgi.
- 9.8 Critical severity
ex1800t_firmware: Improper Control of Generation of Code
TOTOlink EX1800T V9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘hour’ parameter of the setRebootScheCfg interface of the cstecgi .cgi.
- 9.8 Critical severity
ex1800t_firmware: Improper Neutralization of Special Elements used in a Command
TOTOlink EX1800T V9.1.0cu.2112_B20220316 is vulnerable to an unauthorized arbitrary command execution in the ‘admuser’ parameter of the setPasswordCfg interface of the cstecgi .cgi.
- 9.8 Critical severity
A7100RU: Buffer Copy without Checking Size of Input
A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag
- 9.8 Critical severity
X5000R: Improper Neutralization of Special Elements used in an OS Command
A vulnerability was found in Totolink X5000R 9.1.0cu.2300_B20230112. It has been rated as critical. This issue affects the function setDdnsCfg/setDynamicRoute/setFirewallType/setIPSecCfg/setIpPortFilterRules/setLancfg/setLoginPasswordCfg/setMacFilterRules/setM
- 8.8 High severity
A3002ru Firmware: Incorrect Authorization
TOTOLINK A3002RU version 2.0.0-B20190902.1958 has a post-authentication RCE due to incorrect access control, allows attackers to bypass front-end security restrictions and execute arbitrary code.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in an OS Command
In TOTOLINK X6000R_Firmware V9.4.0cu.852_B20230719, the shttpd file sub_417338 function obtains fields from the front-end, connects them through the snprintf function, and passes them to the CsteSystem function, resulting in a command execution vulnerability.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in a Command
In TOTOLINK X6000R_Firmware V9.4.0cu.852_B20230719, the shttpd file sub_415534 function obtains fields from the front-end, connects them through the snprintf function, and passes them to the CsteSystem function, resulting in a command execution vulnerability.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in a Command
An issue in TOTOLINK X6000R V9.4.0cu.652_B20230116 and V9.4.0cu.852_B20230719 allows a remote attacker to execute arbitrary code via the command parameter of the setting/setTracerouteCfg component.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in a Command
An issue in TOTOLINK X6000R V9.4.0cu.652_B20230116 and V9.4.0cu.852_B20230719 allows a remote attacker to execute arbitrary code via the hostName parameter of the switchOpMode component.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in a Command
An issue in TOTOLINK X6000R V9.4.0cu.652_B20230116 and V9.4.0cu.852_B20230719 allows a remote attacker to execute arbitrary code via the IP parameter of the setDiagnosisCfg component.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in an OS Command
In TOTOLINK X6000R V9.4.0cu.852_B20230719, the shttpd file sub_4119A0 function obtains fields from the front-end through Uci_ Set_ The Str function that when passed to the CsteSystem function creates a command execution vulnerability.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in an OS Command
In TOTOLINK X6000R V9.4.0cu.852_B20230719, the shttpd file, sub_4119A0 function obtains fields from the front-end through Uci_ Set_ The Str function that when passed to the CsteSystem function creates a command execution vulnerability.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in an OS Command
In TOTOLINK X6000R V9.4.0cu.852_B20230719, the shttpd file, sub_4119A0 function obtains fields from the front-end through Uci_ Set_ The Str function when passed to the CsteSystem function creates a command execution vulnerability.