TOTOLINK X6000R 9.4.0cu.652_B20230116 UploadFirmwareFile /cgi-bin/cstecgi.cgi firmware_check file_name os command injection

Summaryinfo

A vulnerability has been found in TOTOLINK X6000R 9.4.0cu.652_B20230116 and classified as very critical. This affects the function firmware_check of the file /cgi-bin/cstecgi.cgi of the component UploadFirmwareFile Handler. Performing a manipulation of the argument file_name results in os command injection. This vulnerability is cataloged as CVE-2026-105484. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in TOTOLINK X6000R 9.4.0cu.652_B20230116. It has been classified as very critical. This affects the function firmware_check of the file /cgi-bin/cstecgi.cgi of the component UploadFirmwareFile Handler. The manipulation of the argument file_name with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

This vulnerability is uniquely identified as CVE-2026-105484. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/05/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• TOTOLINK

Name

• X6000R

Version

• 9.4.0cu.652_B20230116

License

• commercial

Website

• Vendor: https://www.totolink.net/

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Submitinfo

Accepted

• Submit #984434: TOTOLINK X6000R 9.4.0cu.652_B20230116 CWE-78 OS Command Injection (by liumingjie)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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