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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": "2026-04-13T22:26:10.533768+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware available from Tenda to address the formwebtypelibrary stack overflow.", "If a firmware update is not yet released, download the newest official firmware from Tenda\u2019s website and install it manually after backing up current settings.", "Restrict the router\u2019s management interface to trusted internal networks only, or disable external access to the web management ports 80 and 443.", "Block HTTP/HTTPS traffic directed at the router\u2019s management IP from all external sources using a firewall or network access control.", "Monitor router logs for repeated access attempts to /goform/webtypelibrary and block suspicious IP addresses with a firewall or intrusion prevention system."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability is limited to the Tenda F456 router running firmware version 1.0.0.5. No other firmware revisions are listed as affected, and the attack vector is remote through the router\u2019s web management interface.", "description_and_impact": "A stack-based buffer overflow exists in the Tenda F456 router\u2019s web interface function formwebtypelibrary, accessed via the /goform/webtypelibrary endpoint. Manipulating the menufacturer/Go argument triggers the overflow, overwriting stack data and potentially allowing an attacker to execute arbitrary code. The flaw aligns with the CWE-119 and CWE-121 weaknesses.", "risk_and_exploitability": "The CVSS score of 8.7 indicates a high severity flaw with a remote attack vector. While EPSS data is unavailable and the vulnerability is not in the CISA KEV catalog, the available evidence shows the exploit was publicly disclosed and can be initiated remotely. This suggests a realistic risk of compromise if the device is exposed to potential attackers."}}}}, "created": "2026-04-14T16:18:25.813656+00:00", "updated": "2026-04-14T16:33:33.162512+00:00", "vendors": ["tenda", "tenda$PRODUCT$f456"]}