Is CVE-2025-70521 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-70521 being exploited in the wild.

How severe is CVE-2025-70521?

Critical severity, with a CVSS score of 9.8, published 7 October 2026.

Is there a fix for CVE-2025-70521?

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-2025-70521 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2025-70521?

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.

CVE-2025-70521: Fanvil x7a command injection in diagnostic ping tool

CVE-2025-70521 · Severity: critical · CVSS 9.8 · Published 2026-10-07

Fanvil x7a is an Android-based IP phone used in enterprise voice communications. An unauthenticated attacker can inject shell commands through the management portal's diagnostic ping tool via a specially crafted websocket request, allowing arbitrary code execution on the device with the privileges of the underlying Android operating system.

Technologies: Fanvil X7a. Vendors: Fanvil.

Quick answers

Is CVE-2025-70521 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-70521 being exploited in the wild.
How severe is CVE-2025-70521?: Critical severity, with a CVSS score of 9.8, published 7 October 2026.
Which products and versions are affected?: Fanvil X7a 2.6.0.1182.
Is there a fix for CVE-2025-70521?: 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-2025-70521 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-70521?: 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 management portal's ping tool fails to sanitize user-supplied input in websocket requests, enabling command injection attacks. An unauthenticated remote attacker can craft a request like "1.1.1.1; touch /sdcard/pwn" to execute arbitrary shell commands on the device. This grants full code execution and privilege escalation on the underlying Android OS.

Affected products

Fanvil x7a 2.6.0.1182

Timeline

2026-02-27: disclosed
2026-10-07: advisory

References

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