CVE-2025-64054

CRITICAL

Fanvil x210 Firmware 2.12.20 - Reflected Cross-Site Scripting via Webconfig Upload Endpoint

Title source: llm

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.

References (2)

Core 2

Core References

Product

http://fanvil.com

Exploit, Third Party Advisory

https://github.com/SpikeReply/advisories/blob/main/cve/fanvil/cve-2025-64054.md

View Exploit ZIP pw:eip

Scores

CVSS v3 9.6

EPSS 0.0040

EPSS Percentile 31.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-79

Status published

Products (1)

fanvil/x210_firmware 2.12.20

Published Dec 05, 2025

Tracked Since Feb 18, 2026