| Título | Totolink A8000RU 7.1cu.643_b20200521 Command Injection |
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| Descripción | A pre‑authentication OS command injection vulnerability exists in the `UploadFirmwareFile` functionality exposed via the web management interface (`/cgi-bin/cstecgi.cgi`) of the TOTOLINK A8000RU 7.1cu.643_b20200521 router.
The CGI handler retrieves user‑controlled input from the HTTP parameter `FileName`, 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.
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| Fuente | ⚠️ https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_343/README.md |
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| Usuario | LtzHust (UID 95660) |
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| Sumisión | 2026-04-26 12:41 (hace 1 mes) |
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| Moderación | 2026-05-24 09:57 (28 days later) |
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| Estado | Aceptado |
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| Entrada de VulDB | 365438 [Totolink A8000RU 7.1cu.643_b20200521 Web Management Interface /cgi-bin/cstecgi.cgi UploadFirmwareFile FileName escalada de privilegios] |
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| Puntos | 20 |
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