Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection_CVE-2026-6140

9.3 / 10

CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Description

A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

Basic Information

ID CVE-2026-6140

Source VulDB

Published Apr 13, 2026 at 00:30

Affected Product

Vendor Totolink

Product A7100RU

Version 7.4cu.2313_b20191024

Affected Versions Totolink A7100RU 7.4cu.2313_b20191024

CWE Classification

CWE-78 CWE-77

References

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    "published": "2026-04-13T00:30:13.660Z",
    "modified": "2026-04-13T00:30:13.660Z",
    "type": "cve",
    "title": "Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/357004\nhttps://vuldb.com/vuln/357004/cti\nhttps://vuldb.com/submit/792987\nhttps://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_193/README.md\nhttps://www.totolink.net/",
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