How severe is CVE-2025-64054?

CVE-2025-64054 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-64054 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64054?

CVE-2025-64054 affects Fanvil X210 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64054?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-64054 have an EU (EUVD) identifier?

Yes. CVE-2025-64054 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201424.

When was CVE-2025-64054 published?

CVE-2025-64054 was published on 2025-12-05 and last updated on 2026-07-05.

CVE-2025-64054

CVE-2025-64054 is a critical-severity vulnerability in Fanvil X210 Firmware with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201424
Weakness: CWE-79
Affected product: Fanvil X210 Firmware
Published: 2025-12-05
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-64054?: CVE-2025-64054 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-64054 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64054?: CVE-2025-64054 affects Fanvil X210 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64054?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-64054 have an EU (EUVD) identifier?: Yes. CVE-2025-64054 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201424.
When was CVE-2025-64054 published?: CVE-2025-64054 was published on 2025-12-05 and last updated on 2026-07-05.

References

https://github.com/SpikeReply/advisories/blob/main/cve/fanvil/cve-2025-64054.md

EU advisories (EUVD)

http://fanvil.com

Affected products (1)

cpe:2.3:o:fanvil:x210_firmware:2.12.20:*:*:*:*:*:*:*

More vulnerabilities in Fanvil X210 Firmware

CVE-2025-64055 — Critical (CVSS 9.8): An issue was discovered in Fanvil x210 V2 2.12.20 allowing unauthenticated attackers on the local network to access…
CVE-2025-64057 — High (CVSS 8.3): Directory traversal vulnerability in Fanvil x210 V2 2.12.20 allows unauthenticated attackers on the local network to…
CVE-2025-64053 — High (CVSS 7.5): A Buffer overflow vulnerability on Fanvil x210 2.12.20 devices allows attackers to cause a denial of service or…
CVE-2025-64052 — Medium (CVSS 5.1): An issue was discovered in Fanvil x210 V2 2.12.20 allowing unauthenticated attackers on the local network to execute…
CVE-2025-64056 — Medium (CVSS 4.3): File upload vulnerability in Fanvil x210 V2 2.12.20 allows unauthenticated attackers on the local network to store…

All CVEs affecting Fanvil X210 Firmware →

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