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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.3"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "f453", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-17T15:21:12.204391+00:00", "value": {"mitigation_remediation": ["Update the router firmware to the latest version released by Tenda that addresses the httpd buffer overflow issue.", "If an update is not yet available, block or restrict external access to the /goform/webtypelibrary HTTP endpoint using the router\u2019s firewall or access\u2011control settings to prevent remote exploitation.", "Limit remote management of the router to trusted internal networks only, disable any unused remote services, and monitor logs for any attempts to reach the vulnerable endpoint."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerable product is the Tenda F453 wireless router running firmware version 1.0.0.3. No other vendors or product lines are listed as affected.", "description_and_impact": "A buffer overflow flaw exists in the Tenda F453 router\u2019s httpd component, specifically the formWebTypeLibrary function that processes the webSiteId argument. When an attacker sends a crafted value for this parameter, the uncontrolled overwrite can lead to arbitrary code execution on the device. The description indicates that the flaw can be triggered remotely, and a public exploit has already been released, highlighting the vulnerability\u2019s potential for high\u2011impact attacks.", "risk_and_exploitability": "The vulnerability has a CVSS score of 8.7, classifying it as high severity, and an EPSS score of less than 1\u202f%. While the current exploitation probability is low, the public availability of an exploit and the remote nature of the attack vector raise the overall risk. The flaw is not present in the CISA KEV catalog, but admins should treat it with urgency because the exposure could compromise the device and any networks connected through it."}}}}, "created": "2026-02-26T13:18:26.071359+00:00", "updated": "2026-04-17T15:30:06.022886+00:00", "vendors": ["tenda", "tenda$PRODUCT$f453"]}