CVE-2025-64055
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn issue was discovered in Fanvil x210 V2 2.12.20 allowing unauthenticated attackers on the local network to access administrative functions of the device (e.g. file upload, firmware update, reboot...) via a crafted authentication bypass.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceFanvil x210 V2 devices running firmware version 2.12.20 contain an authentication bypass vulnerability that allows unauthenticated attackers on the local network to access administrative functions including file upload, firmware updates, and device reboot. The vulnerability stems from improper authentication logic in the web management interface.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.12.20CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm device model is Fanvil X210Identify the device through device labeling, DHCP fingerprints, or network discovery. Fanvil X210 is an IP phone conference device.Affected if The device is a Fanvil X210 model phone
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Check installed firmware versionAccess the device web interface or check via SIP probe/serial console to retrieve the firmware version. Compare against 2.12.20.Affected if Firmware version is exactly 2.12.20
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Verify web management interface is enabledAttempt to access the device HTTP/HTTPS management port (typically 80/443) from an authorized network segment.Affected if Web management interface responds and is accessible from your network position
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Confirm local network attack surfaceDetermine if the device web interface is reachable from network segments where untrusted users or devices may reside.Affected if The web management interface is accessible from network segments beyond trusted administration hosts
You are affected if you have a Fanvil X210 device running firmware version 2.12.20 with its web management interface accessible on your network.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor-supplied firmware patch when available; until then, isolate affected devices on a restricted network segment and disable remote management interfaces to limit exposure to local attackers.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-64055 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-64055 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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