CVE-2026-9435

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setQosCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit is now public 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_356/README.md
https://vuldb.com/submit/813908
https://vuldb.com/vuln/365416
https://vuldb.com/vuln/365416/cti
https://www.totolink.net/

Configurations

No configuration.

History

23 Jul 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Se detectó una vulnerabilidad en Totolink A8000RU 7.1cu.643_b20200521. El elemento afectado es la función setQosCfg del archivo /cgi-bin/cstecgi.cgi del componente Interfaz de Gestión Web. Realizar una manipulación del argumento enable resulta en inyección de comandos del sistema operativo. La explotación remota del ataque es posible. El exploit ahora es público 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-2026-9435

Mitre link : CVE-2026-9435

CVE.ORG link : CVE-2026-9435

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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