CVE-2025-70516 Fanvil x7a - Broken Access Control

Fanvil x7a firmware version 2.6.0.1182 contains a broken access control caused by lack of authentication restrictions in the websocket handler, letting unauthenticated users view device resources and perform diagnostic requests, exploit requires no authentication.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest firmware version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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