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{"analysis": {"en": {"generated_at": "2026-04-16T17:39:40.696600+00:00", "value": {"mitigation_remediation": ["Upgrade the router to the latest firmware version that includes the X-Content-Type-Options header.", "Restrict access to the router\u2019s web management interface to trusted hosts or enforce it through a VPN or firewall rules.", "If an upgrade is not immediately possible, place a reverse proxy or content filter in front of the router that injects the X-Content-Type-Options: nosniff header into all responses from the management interface."], "summary": {"action": "Apply patch", "impact": "Client\u2011side script execution via MIME sniffing"}, "threat_synthesis": {"affected_systems": "This issue affects the Shenzhen Tenda W30E V2 router. Firmware versions up to and including V16.01.0.19(5037) are vulnerable. The flaw exists on the web management pages accessible through the device\u2019s IP address from the local network.", "description_and_impact": "The flaw in the Tenda W30E V2 firmware is that the web management interface fails to set the X-Content-Type-Options: nosniff header. Because browsers perform MIME sniffing when this header is missing, they may interpret crafted responses as executable JavaScript even when the content type is not script. The vulnerability thus allows an attacker who can influence the content served by the router to cause a client\u2019s browser to execute arbitrary script. The impact is limited to the victim who browses the router\u2019s interface, potentially enabling cross\u2011site scripting or other client\u2011side code execution.", "risk_and_exploitability": "The CVSS vector gives a base score of 2.1, indicating low severity. The EPSS score is below 1%, meaning the probability of exploitation is very low. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Exploitation requires that a user with a standard browser visits the router\u2019s web UI and that the attacker can inject malicious content into the responses. The lack of the nosniff header facilitates client\u2011side code execution, but the overall risk remains low because of the limited attack surface and the need for user interaction."}}}}, "created": "2026-01-27T09:03:25.043157+00:00", "updated": "2026-04-16T17:45:27.373243+00:00", "vendors": ["tenda", "tenda$PRODUCT$w30e"]}