CVE-2026-6139

CRITICAL

Totolink A7100RU CGI cstecgi.cgi UploadOpenVpnCert os command injection

Title source: cna

Description

A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument FileName leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/357003

[Signature, Permissions Required] https://vuldb.com/vuln/357003/cti

[Third Party Advisory] https://vuldb.com/submit/792982

[Exploit] https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_192/README.md

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0125

EPSS Percentile 79.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 13, 2026

Tracked Since Apr 13, 2026