CVE-2025-70519: Fanvil x7a cross-site scripting in device log

CVE-2025-70519 · Severity: medium · CVSS 6.1 · Published 2026-10-07

Fanvil x7a is an Android-based VoIP phone used for business communications. The device's management portal contains a device log viewer that fails to sanitize user-supplied input, allowing an attacker to inject malicious JavaScript code. When an administrator views the device logs, the injected code executes in their browser, potentially enabling credential theft, session hijacking, or unauthorized configuration changes.

Technologies: Fanvil X7a. Vendors: Fanvil.

Quick answers

Is CVE-2025-70519 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-70519 being exploited in the wild.
How severe is CVE-2025-70519?
Medium severity, with a CVSS score of 6.1, published 7 October 2026.
Which products and versions are affected?
Fanvil X7a 2.6.0.1182.
Is there a fix for CVE-2025-70519?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-70519 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-70519?
Check whether you run Fanvil X7a 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

The device log component in the management portal fails to properly encode HTML-special characters in reflected user input, enabling reflected XSS attacks. An unauthenticated attacker can craft a request containing HTML/JavaScript payloads (e.g., <img src=1 onerror=alert(1)>) that will execute in any browser rendering the log output. The vulnerability requires a user interaction—an administrator must visit or be directed to a malicious log URL—but no authentication is required from the attacker.

Affected products

  • Fanvil x7a 2.6.0.1182

Timeline

  • 2026-02-27: disclosed: Vulnerability disclosed by DarkPoint
  • 2026-10-07: advisory: Published in NVD

References

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