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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": "2026-04-28T05:20:23.079324+00:00", "value": {"mitigation_remediation": ["Acquire the latest firmware revision from Tenda that addresses the SafeEmailFilter buffer overflow.", "If a firmware upgrade is not immediately possible, disable or block network access to /goform/SafeEmailFilter on the device, or place the device behind a firewall that restricts inbound connections to trusted IP addresses.", "Configure network segmentation to isolate the device from critical infrastructure and limit its exposure to the internet.", "Enable logging for web\u2011interface access to detect and investigate attempts to trigger the overflow."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Users running Tenda F456 firmware version 1.0.0.5 are affected. The issue originates in the SafeEmailFilter component exposed through the web interface; no other Tenda products or firmware versions are known to be impacted.", "description_and_impact": "A buffer overflow flaw exists in the SafeEmailFilter function of Tenda F456 firmware. By manipulating the argument \"page\" sent to /goform/SafeEmailFilter, an attacker can overflow the buffer and potentially execute arbitrary code on the device. The vulnerability is remote\u2011only, meaning it can be triggered by an external network connection, and exploitation code has already been published, raising the risk of real\u2011world attacks.", "risk_and_exploitability": "The CVSS score of 8.7 indicates a high severity classified as a high\u2011lateral\u2011impact remote code execution. The EPSS score of less than 1% suggests a low probability of widespread exploitation at present, and the vulnerability has not yet entered CISA\u2019s KEV catalog. The description confirms the attack vector is remote via the web interface, and the existence of published exploit code indicates that motivated adversaries could use this flaw without additional constraints."}}}}, "created": "2026-04-27T18:41:59.096050+00:00", "updated": "2026-04-28T05:30:23.349570+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}