CVE-2026-9408
Deferred Deferred - Pending Action
Command Injection in Totolink A8000RU

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: VulDB

Description
A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setStaticDhcpRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enable results in os command injection. The attack may be performed from remote. The exploit is now public and may be used.
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Meta Information
Published
2026-05-25
Last Modified
2026-05-25
Generated
2026-06-15
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-9408
EUVD
EUVD-2026-31609
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
totolink a8000ru 7.1cu.643_b20200521
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Exploitability
CWE
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KEV
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CWE ID Description
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.
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.
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Executive Summary

This vulnerability exists in the Totolink A8000RU router, specifically in the setStaticDhcpRules function within the /cgi-bin/cstecgi.cgi file of its Web Management Interface.

The issue arises from improper handling of the 'enable' argument, which allows an attacker to perform OS command injection.

This means that an attacker can remotely execute arbitrary operating system commands on the affected device by manipulating this argument.

The exploit for this vulnerability is publicly available.

Impact Analysis

This vulnerability can have severe impacts because it allows remote attackers to execute arbitrary commands on the affected device without any authentication.

Potential impacts include complete compromise of the device, unauthorized access to network resources, disruption of network services, and potential use of the device as a foothold for further attacks.

Given the high CVSS scores (up to 10.0), the vulnerability poses a critical risk to confidentiality, integrity, and availability.

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