CVE-2026-9454
Deferred Deferred - Pending Action
OS Command Injection in Totolink A8000RU

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: VulDB

Description
A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The attack may be launched remotely. The exploit has been published 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-2026-9454
EUVD
EUVD-2026-31670
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 Web Management Interface component. It affects the function setOpenVpnCertGenerationCfg located in the /cgi-bin/cstecgi.cgi file. By manipulating the argument 'servername', an attacker can perform OS command injection, which means they can execute arbitrary operating system commands on the device remotely.

Impact Analysis

The vulnerability allows remote attackers to execute arbitrary operating system commands on the affected device without any authentication. 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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