# CVE-2025-70515: Fanvil x7a device log reflected XSS

Source: https://junglewise.ai/threats/cve-2025-70515-the-device-log-component-of-fanvil-x7a-firmware-version-2-6-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-07. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

CVE-2025-70515 · Severity: medium · CVSS 6.1 · Published 2026-10-07

Fanvil x7a IP phones running firmware 2.6.0.1182 contain a cross-site scripting flaw in the device log component that fails to sanitize user-supplied data. An unauthenticated attacker can inject malicious JavaScript code that executes in browsers viewing the device logs, potentially leading to account compromise or unauthorized control of the phone.

Technologies: [Fanvil X7a](https://junglewise.ai/threats/technologies/x7a). Vendors: [Fanvil](https://junglewise.ai/threats/vendors/fanvil).

## Quick answers

**Is CVE-2025-70515 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-70515 being exploited in the wild.

**How severe is CVE-2025-70515?** 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-2025-70515?** 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-2025-70515 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2025-70515?** 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 reflects unsanitized user-supplied data directly into the DOM without HTML encoding or sanitization. An unauthenticated remote attacker can inject HTML and JavaScript payloads (e.g., image tags with onerror handlers) through specially crafted requests to the management portal, achieving arbitrary script execution in the context of any user viewing the device logs.

## Affected products

- Fanvil x7a 2.6.0.1182

## Timeline

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

## References

- [http://download.fanvil.com/Firmware/Release/X7A/](http://download.fanvil.com/Firmware/Release/X7A/)
- [https://www.darkpoint.ca/blog/2026/02/27/Fanvil-x7a-PA2S-Vulnerability-Disclosure](https://www.darkpoint.ca/blog/2026/02/27/Fanvil-x7a-PA2S-Vulnerability-Disclosure)

## Related threats

- [Fanvil x7a cross-site request forgery in request handler](https://junglewise.ai/threats/cve-2025-70522-the-request-handler-of-fanvil-x7a-firmware-version-2-6-0-1182)
- [Fanvil x7a command injection in diagnostic ping tool](https://junglewise.ai/threats/cve-2025-70521-the-management-portal-s-diagnostic-ping-tool-of-fanvil-x7a)
- [Fanvil x7a websocket authentication bypass](https://junglewise.ai/threats/cve-2025-70520-the-websocket-handler-of-fanvil-x7a-firmware-version-2-6-0-1182)
- [Fanvil x7a cross-site scripting in device log](https://junglewise.ai/threats/cve-2025-70519-the-device-log-component-of-fanvil-x7a-firmware-version-2-6-0)
- [Fanvil x7a command injection in diagnostic ping tool](https://junglewise.ai/threats/cve-2025-70518-the-management-portal-s-diagnostic-ping-tool-of-fanvil-x7a)