What is CVE-2025-64054?

CVE-2025-64054 is a critical-severity vulnerability in Fanvil X210, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2025-12-05.

How severe is CVE-2025-64054?

Critical severity. CVSS v3 base score is 9.6 out of 10.

XSS in Fanvil X210

CVE-2025-64054

A reflected Cross Site Scripting (XSS) vulnerability on Fanvil x210 2.12.20 devices allows attackers to cause a denial of service or potentially execute arbitrary commands via crafted POST request to the /cgi-bin/webconfig?page=upload&action=submit endpoint.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (30.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Fanvil X210 — versions 2.0
Fanvil X210_firmware — versions 2.12.20
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-64054?: CVE-2025-64054 is a critical-severity vulnerability in Fanvil X210, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2025-12-05.
How severe is CVE-2025-64054?: Critical severity. CVSS v3 base score is 9.6 out of 10.