CVE-2026-9387

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

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_334/README.md
https://vuldb.com/submit/813433
https://vuldb.com/vuln/365350
https://vuldb.com/vuln/365350/cti
https://www.totolink.net/

Configurations

No configuration.

History

23 Jul 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Se ha descubierto una falla de seguridad en Totolink A8000RU 7.1cu.643_b20200521. El elemento afectado es la función setUpgradeFW del archivo /cgi-bin/cstecgi.cgi del componente Interfaz de Gestión Web. Realizar una manipulación del argumento resetFlags resulta en inyección de comandos del sistema operativo. Es posible iniciar el ataque de forma remota. El exploit ha sido publicado y puede ser utilizado para ataques.

24 May 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-24 15:16

Updated : 2026-07-23 11:10

NVD link : CVE-2026-9387

Mitre link : CVE-2026-9387

CVE.ORG link : CVE-2026-9387

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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