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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": "2026-04-28T04:44:36.941857+00:00", "value": {"mitigation_remediation": ["Apply the vendor-supplied firmware update that resolves the buffer overflow.", "If no patch is yet available, restrict access to the /goform/DhcpListClient endpoint by blocking its HTTP URL, or disable DHCP list client functionality if the device allows it.", "Place the router behind a firewall and limit management access to trusted internal networks using VLANs or ACLs."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Only the Tenda F456 router running firmware version 1.0.0.5 is affected. No other Tenda models or firmware versions are listed as vulnerable, and the CWE identifies the flaw as a buffer overflow in a web\u2011based configuration endpoint.", "description_and_impact": "The vulnerability is a stack buffer overflow located in the fromDhcpListClient function of the /goform/DhcpListClient HTTP handler in Tenda F456 firmware 1.0.0.5. When an attacker supplies an oversized page parameter, the unmanaged input overwrites adjacent memory, enabling arbitrary code execution on the device. This flaw classifies under CWE\u2011119 and CWE\u2011120 and has a CVSS score of 8.7, indicating high severity.", "risk_and_exploitability": "The EPSS score is below 1\u202f%, and the vulnerability is not listed in the CISA KEV catalog, suggesting the exploitation probability is low at this time. Nevertheless, the flaw can be triggered remotely through the router\u2019s web interface, so an attacker with network access can deliver a malicious payload. The high CVSS score and public disclosure of exploit code call for prompt attention, especially in environments where the router is exposed to the Internet."}}}}, "created": "2026-04-28T01:15:15.494780+00:00", "updated": "2026-04-28T04:45:22.555287+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}