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CVE-2025-64054

Critical

Description

A reflected Cross Site Scripting (XSS) vulnerability on Fanvil x210 2.12.20 devices allows attackers to cause a denial of service or potentially execute arbitrary commands via crafted POST request to the /cgi-bin/webconfig?page=upload&action=submit endpoint.

SeverityCritical
CVSS9.6
Exploit probability—
ProductFanvil X210 Firmware
PublishedDec 5, 2025
First seenDec 5, 2025
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
fanvil x210_firmware2.12.20—

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