CVE-2026-5851

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed 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_new/blob/main/A7100RU/vul_157/README.md
https://vuldb.com/submit/791271
https://vuldb.com/vuln/356377
https://vuldb.com/vuln/356377/cti
https://www.totolink.net/

Configurations

No configuration.

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Se ha descubierto una falla de seguridad en Totolink A7100RU 7.4cu.2313_b20191024. Esto afecta a la función setUPnPCfg del archivo /cgi-bin/cstecgi.cgi del componente Gestor CGI. La manipulación del argumento enable resulta en inyección de comandos del sistema operativo. El ataque puede ejecutarse remotamente. El exploit ha sido publicado y puede ser utilizado para ataques.

Information

Published : 2026-04-09 06:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-5851

Mitre link : CVE-2026-5851

CVE.ORG link : CVE-2026-5851

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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