Command Injection in Totolink A8000RU

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: VulDB

Description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setRemoteCfg 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 made available to the public and could be used for attacks.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-25

Last Modified

2026-05-25

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-9406

EUVD

EUVD-2026-31606

Affected Vendors & Products

Vendor	Product	Version / Range
totolink	a8000ru	7.1cu.643_b20200521

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CWE-77	The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Totolink A8000RU router's Web Management Interface, specifically in the setRemoteCfg function of the /cgi-bin/cstecgi.cgi file. An attacker can manipulate the 'enable' argument in this function to perform an operating system command injection. This means that the attacker can remotely execute arbitrary commands on the device.

Impact Analysis

The vulnerability allows remote attackers to execute arbitrary OS commands on the affected device without any authentication or user interaction. This can lead to full compromise of the device, including unauthorized access, data theft, disruption of network services, or using the device as a foothold for further attacks.

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