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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.5"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "f456", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-13T21:35:56.623514+00:00", "value": {"mitigation_remediation": ["Acquire and install the latest firmware version from Tenda that does not include the vulnerable function.", "If a patch is not yet released, restrict external access to the /goform/qossetting interface by configuring the router\u2019s firewall or ACL settings to allow only trusted internal devices.", "Monitor the router\u2019s logs for anomalous access attempts to the qossetting API and investigate any suspicious activity.", "Reach out to Tenda support for an update schedule or an interim advisory."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability impacts the Tenda F456 router product, version 1.0.0.5. Only devices running this specific firmware build contain the flaw. No other Tenda products or versions are indicated as affected in the available data.", "description_and_impact": "A stack-based buffer overflow exists in the qossetting feature of Tenda F456 router firmware 1.0.0.5. The flaw occurs when the 'page' argument to the fromqossetting function in /goform/qossetting is processed, allowing an adversary to place crafted input that overruns a local stack buffer. Successful exploitation can lead to arbitrary code execution on the device, compromising confidentiality, integrity, and availability of the network.", "risk_and_exploitability": "This flaw carries a CVSS score of 8.7, classifying it as high severity. The EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalogue, so the exact likelihood of exploitation in the wild cannot be quantified from the data. The description confirms that the exploit is remote, and public proof\u2011of\u2011concept code has been published, implying that an attacker can trigger the buffer overflow from outside the network by accessing the /goform/qossetting endpoint. The lack of a public patch means that systems remain exposed until an official firmware update is applied."}}}}, "created": "2026-04-14T16:18:26.824148+00:00", "updated": "2026-04-14T16:33:34.236358+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}