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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.5"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "F456", "source": "cna", "vendor": "Tenda"}, "product": "f456", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-28T05:06:57.913655+00:00", "value": {"mitigation_remediation": ["Update the router to the latest firmware released by Tenda that contains the fix for the L7Prot buffer overflow.", "Configure the firewall or router settings to block or restrict remote access to the web management interface from the WAN side.", "If the router provides an option to disable the L7Prot feature, turn it off or limit its availability to local addresses only.", "Monitor inbound traffic for abnormal requests to the /goform/L7Prot endpoint and block source addresses that appear suspicious."], "summary": {"action": "Patch Now", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The flaw affects the Tenda F456 router running firmware version 1.0.0.5. No other version numbers are specified in the data, so only this configuration is confirmed to be vulnerable.", "description_and_impact": "A buffer overflow flaw is present in the frmL7ProtForm handler of the /goform/L7Prot endpoint in the httpd component of Tenda F456 firmware 1.0.0.5. The vulnerability is triggered when a specially crafted message is sent to the \"page\" argument, causing an uncontrolled write beyond the bounds of the buffer in memory. The overflow can lead to execution of arbitrary code on the device, giving a remote attacker control of the router.", "risk_and_exploitability": "The flaw scores a high CVSS of 8.7, indicating serious impact. The EPSS indicates an exploitation probability of less than 1 percent, and the vulnerability is not listed in the CISA KEV catalog. Remote exploitation can be achieved via HTTP requests to the affected endpoint, and the public release of an exploit demonstrates that attackers could mount successful attacks if the router is exposed to the Internet."}}}}, "created": "2026-04-27T18:41:59.092863+00:00", "updated": "2026-04-28T05:15:22.939003+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}