Submit #792243: Totolink A7100RU 7.4cu.2313_b20191024 Command Injectioninfo

TitelTotolink A7100RU 7.4cu.2313_b20191024 Command Injection
BeschreibungA pre‑authentication OS command injection vulnerability exists in the `setOpenVpnCfg` functionality exposed via the web management interface (`/cgi-bin/cstecgi.cgi`) of the TOTOLINK A7100RU 7.4cu.2313_b20191024 router. The CGI handler retrieves user‑controlled input from the HTTP parameter `port`, embeds it directly into a shell command string using `sprintf`, and executes it via `CsteSystem()` without any sanitization or escaping. As a result, a remote attacker with network access to the web interface can inject arbitrary shell commands and execute them with root privileges on the device, without authentication. This allows full compromise of the router and, potentially, further compromise of the attached network.
Quelle⚠️ https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_175/README.md
Benutzer
 LtzHust2 (UID 95662)
Einreichung29.03.2026 06:04 (vor 23 Tagen)
Moderieren11.04.2026 10:15 (13 days later)
StatusDuplikat
VulDB Eintrag214416 [TOTOLINK A7100RU 7.4cu.2313_B20191024 setting/setOpenVpnCfg pass erweiterte Rechte]
Punkte0

Want to know what is going to be exploited?

We predict KEV entries!