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8.9
Totolink A7100RU Router: Remote Command Injection Risk
CVE-2026-6139
Summary
A vulnerability in the Totolink A7100RU router's CGI Handler can allow hackers to execute unauthorized commands on the device. This flaw is found in the UploadOpenVpnCert function of the /cgi-bin/cstecgi.cgi file, and an attacker can exploit it remotely. To protect your network, it's recommended to update your router's firmware to the latest version.
Original title
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...
Original 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.
nvd CVSS2.0
10.0
nvd CVSS3.1
9.8
nvd CVSS4.0
8.9
Vulnerability type
CWE-77
Command Injection
CWE-78
OS Command Injection
Published: 13 Apr 2026 · Updated: 13 Apr 2026 · First seen: 13 Apr 2026