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
- 9.8 Critical severity
X5000R: Improper Neutralization of Special Elements used in an OS Command
A vulnerability was determined in TOTOLINK X5000R 9.1.0cu.2089_B20211224. 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 e
- 9.8 Critical severity
X5000R's (AX1800 router): Incorrect Authorization
Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may a
- 9.3 Critical severity
N300RT: Improper Neutralization of Special Elements used in an OS Command
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 re
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
TOTOLink A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow in the addEffect parameter of the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
TOTOLink A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow in the ssid parameter of the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the ssid5g parameter in the sub_421CF0 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_422880 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_42396C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the wifiOff parameter in the sub_4232EC function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the wifiOff parameter in the sub_421A04 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the ssid5g parameter in the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
A7000r Firmware: Stack-based Buffer Overflow
Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the ssid5g parameter in the sub_4222E0 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_421BAC function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the http_host parameter in the sub_426EF8 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_425400 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 7.5 High severity
Lr350 Firmware: Stack-based Buffer Overflow
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the password parameter in the sub_426EF8 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
- 8.8 High severity
A3300R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. Such manipulation of the argument enable leads to stack-based
- 8.8 High severity
A3300R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A flaw has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. This manipulation of the argument recHour causes stack-based buffer o
- 8.8 High severity
A3300R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. Impacted is the function setOpModeCfg of the file /cgi-bin/cstecgi.cg of the component POST Parameter Handler. The manipulation of the argument opmode results in stack-based buffer overflo
- 8.8 High severity
A3300R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. 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 overf
- 9.8 Critical severity
A3300R: Buffer Copy without Checking Size of Input
A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to initiate the attack remo
- 9.8 Critical severity
A3300R: Buffer Copy without Checking Size of Input
A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit
- 7.5 High severity
N600r Firmware: NULL Pointer Dereference
A NULL pointer dereference in the sub_41773C function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.
- 7.5 High severity
N600r Firmware: NULL Pointer Dereference
A NULL pointer dereference in the main function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.
- 7.5 High severity
N600r Firmware: Stack-based Buffer Overflow
TOTOLINK N600R v4.3.0cu.7866_B20220506 was discovered to contain a stack overflow in the ssid parameter in the setWiFiBasicConfig function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
- 7.5 High severity
N600r Firmware: Stack-based Buffer Overflow
TOTOLINK N600R v4.3.0cu.7866_B20220506 was discovered to contain a stack overflow in the wepkey2 parameter in the setWiFiMultipleConfig function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
- 8.8 High severity
N600R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A security vulnerability has been detected in TOTOLINK N600R up to 4.3.0cu.7866_B20220506. 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 bu
- 9.8 Critical severity
X18 Firmware: Improper Neutralization of Special Elements used in a Command
TOTOLINK X18 V9.1.0cu.2053_B20230309 was discovered to contain a command injection vulnerability via the mac parameter in the setEasyMeshAgentCfg function.
- 9.8 Critical severity
X18 Firmware: Improper Neutralization of Special Elements used in a Command
TOTOLINK X18 V9.1.0cu.2053_B20230309 was discovered to contain a command injection vulnerability via the agentName parameter in the setEasyMeshAgentCfg function.
- 9.8 Critical severity
X6000R: Improper Neutralization of Special Elements used in an OS Command
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.1458_B20250708.
- 8.8 High severity
Improper Input Validation vulnerability in TOTOLINK X6000R allows Command Injection, File…
Improper Input Validation vulnerability in TOTOLINK X6000R allows Command Injection, File Manipulation.This issue affects X6000R: through V9.4.0cu.1360_B20241207.
- 9.8 Critical severity
X6000R: Improper Neutralization of Special Elements used in an OS Command
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.1360_B20241207.
- 9.8 Critical severity
X6000r Firmware: Improper Neutralization of Special Elements used in a Command
TOTOLINK X6000R V9.4.0cu.1360_B20241207 was found to contain a command injection vulnerability in the sub_417D74 function via the file_name parameter. This vulnerability allows unauthenticated attackers to execute arbitrary commands via a crafted request.
- 9.8 Critical severity
N600R: Improper Neutralization of Special Elements used in a Command
A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. Th
- 9.8 Critical severity
X5000R: Improper Neutralization of Special Elements used in a Command
A vulnerability was found in TOTOLINK X5000R 9.1.0cu.2415_B20250515. This affects the function sub_410C34 of the file /cgi-bin/cstecgi.cgi. Performing manipulation of the argument pid results in command injection. Remote exploitation of the attack is possible.
- 8.8 High severity
A702R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability was determined in TOTOLINK A702R 4.0.0-B20211108.1423. This issue affects the function sub_418030 of the file /boafrm/formParentControl. Executing manipulation of the argument submit-url can lead to buffer overflow. The attack may be launched r
- 8.8 High severity
A702R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability was found in TOTOLINK A702R 4.0.0-B20211108.1423. This vulnerability affects the function sub_4466F8 of the file /boafrm/formOneKeyAccessButton. Performing manipulation of the argument submit-url results in buffer overflow. The attack may be in
- 8.8 High severity
A702R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has
- 8.8 High severity
A702R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_419BE0 of the file /boafrm/formIpQoS. This manipulation of the argument mac causes buffer overflow. The attack can be initiated remotely. The exploit has b
- 8.8 High severity
A702R: Improper Restriction of Operations within the Bounds of a Memory Buffer
A vulnerability was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub_4162DC of the file /boafrm/formFilter. The manipulation of the argument ip6addr results in buffer overflow. It is possible to launch the att