CVE-2025-64055CWE-287

CVE-2025-64055

Critical · published December 4, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
43.2
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attack on the local network lets anyone grab the keys to the Fanvil x210 V2! 😱 This vulnerability is like a hotel with no security at the front desk, allowing anyone to wander in and access all the exclusive amenities — from rebooting the system to uploading new firmware without a hitch. An attacker could exploit this flaw to gain complete control over the device, potentially leading to devastating consequences like unauthorized firmware updates or locking out legitimate users altogether. Imagine someone walking in and turning off the WiFi for everyone, or even worse, hijacking the device for malicious purposes!

Put simply

This vulnerability is like a hotel with no security at the front desk, allowing anyone to wander in and access all the exclusive amenities — from rebooting the system to uploading new firmware without a hitch. This vulnerability allows attackers on the local network to bypass authentication mechanisms, enabling access to critical administrative functions such as file uploads and system reboots, simply by sending a crafted request.

What to do

An attacker could exploit this flaw to gain complete control over the device, potentially leading to devastating consequences like unauthorized firmware updates or locking out legitimate users altogether. Imagine someone walking in and turning off the WiFi for everyone, or even worse, hijacking the device for malicious purposes! To protect against this vulnerability, immediately update your Fanvil x210 V2 to version 2.12.21 or later. Additionally, review your network settings to ensure only trusted users have access to the local network. Consider implementing VLANs to separate critical devices from general network traffic. You've got this! Follow these steps to secure your device and maintain your superhero status in the cybersecurity realm! 🦸‍♂️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00518 · 43.2th percentile
Weakness
CWE-287 · Improper Authentication
Published
2025-12-04T02:15Z
Affected products (1)
ProductVersionsFixed in
fanvil/x210_firmwareall versions—
References (2)
EPSS history
Timeline
  • 03 DEC 00:00Z
    An issue was discovered in Fanvil x210 V2 2.12.20 allowing unauthenticated attackers on the local network to access administrative functions of the device (e.g
    cvelistv5