CVE-2025-70516

Status: DeferredCritical (9.1)—

The websocket handler of Fanvil x7a firmware version 2.6.0.1182 does not enforce proper authentication restrictions against sessionless users. The lack of restrictions grants anyone the ability to view any device resources such as operational logs or perform diagnostic requests.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base score: 9.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.33%
Percentile among all scored CVEs: 24
Score date: 10/17/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access85 %
Primary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Secondary impactT1005 Data from Local Systemcollection75 %

AV:N/AC:L/PR:N/UI:N indica explotación remota sin autenticación (T1190). El defecto de autenticación en websocket permite acceso no autorizado a recursos (T1078) y lectura de logs operacionales (T1005).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Fanvil — X7A^AI

CWEs

CWE-306

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2025-70516",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2025-70516",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-07T20:25:16.865702Z"
        }
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    "cvssMetricV31": [
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.2,
        "exploitabilityScore": 3.9
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      "affectedData": [
        {
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          "versions": [
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  "published": "2026-10-07T15:16:52.310",
  "references": [
    {
      "url": "http://download.fanvil.com/Firmware/Release/X7A/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.darkpoint.ca/blog/2026/02/27/Fanvil-x7a-PA2S-Vulnerability-Disclosure",
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    {
      "url": "https://www.fanvil.com/products/p1/x/20210921/5043.html",
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      "value": "The websocket handler of Fanvil x7a firmware version 2.6.0.1182 does not enforce proper authentication restrictions against sessionless users. The lack of restrictions grants anyone the ability to view any device resources such as operational logs or perform diagnostic requests."
    }
  ],
  "lastModified": "2026-10-07T21:17:06.343",
  "sourceIdentifier": "cve@mitre.org"
}