CVE-2025-64055: Fanvil x210 V2 authentication bypass in httpd cgi-bin

CVE-2025-64055 · Severity: critical · CVSS 9.8 · Published 2025-12-03

A security vulnerability has been identified in Fanvil x210 V2 enterprise IP phones, which are used for business communications. An attacker on the same network can bypass security controls to access the device's administrative interface without a password. This allows unauthorized individuals to reboot the phone, upload malicious files, or modify system settings, potentially leading to eavesdropping or service disruption.

Technologies: Fanvil X210, Fanvil X210 V2, Fanvil X210 Firmware. Vendors: Fanvil.

Quick answers

Is CVE-2025-64055 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-64055 being exploited in the wild.
How severe is CVE-2025-64055?
Critical severity, with a CVSS score of 9.8, published 3 December 2025.
Which products and versions are affected?
Fanvil X210 V2 2.12.20.
Is there a fix for CVE-2025-64055?
A patch was published on 2025-04-28: Firmware version 2.12.22.2 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-64055 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-64055?
Check whether you run Fanvil X210, Fanvil X210 V2 or Fanvil X210 Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An authentication bypass vulnerability exists in the httpd server configuration of Fanvil x210 V2 firmware version 2.12.20. The web server configuration only enforces authentication for the /html path, leaving other paths such as /cgi-bin unprotected. An unauthenticated attacker on the local network can exploit this by directly calling CGI scripts to perform administrative actions like file uploads, firmware updates, and device reboots. The issue is addressed in firmware version 2.12.22.2.

Affected products

  • Fanvil x210 V2 2.12.20

Timeline

  • 2025-01-03: disclosed: Vulnerability discovered by Spike Reply Cybersecurity Team
  • 2025-03-04: other: Initial contact with vendor
  • 2025-04-28: patched: Firmware version 2.12.22.2 released
  • 2025-12-03: advisory: CVE published

References

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