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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (35.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Fanvil X210 — versions 2.0
- Fanvil X210 Firmware — versions 2.12.20
Weakness classification (CWE)
References
- fanvil.com (Product)
- github.com/SpikeReply/advisories/blob/main/cve/fanvil/cve-2025-64054.md (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.