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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": "2026-04-28T05:05:14.792932+00:00", "value": {"mitigation_remediation": ["Upgrade to the latest\u2011available router firmware that removes the /goform/setcfm buffer overflow.", "If a firmware update is unavailable, block external access to the /goform/setcfm endpoint using a firewall or access control list.", "Consider disabling the httpd service or installing network segmentation so that the vulnerable router is isolated from untrusted hosts."], "summary": {"action": "Patch immediately", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The flaw affects the Tenda F456 router running firmware version 1.0.0.5. Only this specific firmware revision is known to contain the vulnerable implementation of the HTTP service.", "description_and_impact": "A buffer overflow flaw exists in the httpd component of the Tenda F456 router, triggered by manipulating the funcname/funcpara1 arguments in the /goform/setcfm endpoint. The vulnerable buffer overflow can be exploited to execute arbitrary code on the device, compromising confidentiality, integrity, and availability. The weakness matches the classic stack-based buffer overflow patterns identified by CWE-119 and CWE-120.", "risk_and_exploitability": "The CVSS score of 8.7 indicates a high severity. The EPSS score of < 1% shows a low probability of current exploitation, but an exploit has already been published and could be used opportunistically. The vulnerability is not listed in CISA KEV, yet it remains a viable remote attack vector that can be triggered over the network."}}}}, "created": "2026-04-27T18:41:59.091849+00:00", "updated": "2026-04-28T05:15:22.937568+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}