---
id: CVE-2025-64053
title: >-
  A Buffer overflow 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.
summary: >-
  A Buffer overflow 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.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-120
vendor: fanvil
product: x210_firmware
affected:
  - x210_firmware = 2.12.20
published: '2025-12-05'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-64053'
references:
  - url: >-
      https://github.com/SpikeReply/advisories/blob/main/cve/fanvil/cve-2025-64053.md
    label: cve@mitre.org
tags:
  - nvd
epss: 0.02892
epssPercentile: 0.86348
ingestedAt: '2026-09-25T23:21:16.894Z'
---

## Overview

A Buffer overflow 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.

## Affected

- `x210_firmware = 2.12.20`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.