CVE-2026-9436

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used.

CVSS v3 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_357/README.md
https://vuldb.com/submit/813461
https://vuldb.com/submit/813909
https://vuldb.com/vuln/365417
https://vuldb.com/vuln/365417/cti
https://www.totolink.net/

Configurations

No configuration.

History

23 Jul 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Se ha encontrado una falla en Totolink A8000RU 7.1cu.643_b20200521. El elemento afectado es la función setL2tpServerCfg del archivo /cgi-bin/cstecgi.cgi del componente Interfaz de Gestión Web. La ejecución de una manipulación del argumento enable puede conducir a una inyección de comandos del sistema operativo. El ataque puede ejecutarse de forma remota. El exploit ha sido publicado y puede ser utilizado.

25 May 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-25 08:16

Updated : 2026-07-23 11:10

NVD link : CVE-2026-9436

Mitre link : CVE-2026-9436

CVE.ORG link : CVE-2026-9436

JSON object : View

Products Affected

No product.

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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