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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1cu.643_b20200521"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A8000RU", "source": "cna", "vendor": "Totolink"}, "product": "a8000ru", "vendor": "totolink"}], "analysis": {"en": {"generated_at": "2026-04-28T12:20:54.053698+00:00", "value": {"mitigation_remediation": ["Apply the vendor\u2019s latest firmware release that contains the fix for the command\u2011injection vulnerability on the A8000RU.", "Disable remote access to the router\u2019s WiFi configuration and administration interface if it is not required for your network.", "Configure firewall or router rules to block external HTTP traffic to the /cgi-bin/cstecgi.cgi path or to the entire router management port.", "Continuously monitor router logs and network traffic for anomalous activity that may indicate an attempt to exploit the command injection."], "summary": {"action": "Immediate Patch", "impact": "Remote command execution"}, "threat_synthesis": {"affected_systems": "The flaw is present in the Totolink A8000RU router running firmware version 7.1cu.643_b20200521. The affected vendor is Totolink, model A8000RU, and the issue has been documented for this specific firmware build. Users of this model should verify whether their firmware matches the affected version and determine whether newer releases contain the fix.", "description_and_impact": "A flaw in the setWiFiBasicCfg function of the /cgi-bin/cstecgi.cgi script allows an attacker to inject arbitrary operating\u2011system commands by manipulating the wifiOff argument. The vulnerability can be triggered remotely via standard HTTP requests and, once exploited, gives the attacker full control over the router\u2019s operating system, enabling persistence, data exfiltration, or pivoting into the local network.", "risk_and_exploitability": "The CVSS score of 9.3 marks this as a critical weakness with a high likelihood of exploitation. Although the EPSS score is currently unavailable, the public release of a working exploit and the lack of a patch in the KEV catalog point to a real and immediate threat. The weakest access requirement is remote network connectivity to the router\u2019s web interface or administration endpoints, making the attack vector easily exploitable from outside the local network."}}}}, "created": "2026-04-28T10:30:28.859619+00:00", "updated": "2026-04-28T12:30:31.057803+00:00", "vendors": ["totolink", "totolink$PRODUCT$a8000ru"]}