Security readout for executives and security teams
Plain-English summary
CVE-2025-64053 is a reported buffer overflow in Fanvil X210 devices running version 2.12.20. A remote attacker could crash the device and may be able to run arbitrary commands. For organizations using these VoIP phones, the main business concern is loss of phone availability and possible device compromise if management interfaces are reachable.
Executive priority
Treat as high priority if Fanvil X210 phones are deployed, especially if remote administration is exposed. Prioritize inventory, exposure reduction, and vendor update checks. If devices are isolated on controlled management networks, urgency is lower but remediation should still be tracked.
Technical view
The issue is described as CWE-120 buffer overflow triggered by a crafted POST request to the web configuration upload submit endpoint. CVSS 3.1 is 7.5, network exploitable, low complexity, no privileges, no user interaction, with high availability impact. The CVE text also mentions potential arbitrary command execution, but the vector records no confidentiality or integrity impact.
Likely exposure
Exposure is most likely where Fanvil X210 2.12.20 web management interfaces are reachable from untrusted networks. Internet-exposed phone administration portals or flat internal networks increase risk. The CVE record’s affected product fields are incomplete, so confirm exact models and firmware locally.
Exploitation context
No CISA KEV listing is provided, and the supplied sources do not establish active exploitation. The vulnerability is remotely reachable over the network and does not require authentication per the CVSS vector, making exposed management interfaces the primary concern.
Researcher notes
The public CVE data identifies Fanvil X210 2.12.20 and a specific web configuration endpoint, but the structured affected-product fields are listed as n/a. Evidence for command execution beyond the description is not included in the bundle. Avoid assuming broader Fanvil model impact without vendor confirmation.
Mitigation direction
- Check Fanvil guidance for fixed firmware or official mitigation.
- Remove web management access from the internet.
- Restrict phone administration interfaces to trusted management networks.
- Segment VoIP devices from user and server networks.
- Monitor affected devices for crashes, reboots, or unusual management requests.
Validation and detection
- Inventory Fanvil X210 devices and record firmware versions.
- Identify devices running version 2.12.20.
- Review firewall and access-control exposure for web management interfaces.
- Check vendor or reseller channels for update availability.
- Verify compensating controls limit untrusted access to device administration.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-64053 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/SpikeReply/advisories/blob/main/cve/fanvil/cve-2025-64053.mdCVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.