CVE-2026-120240

{
  "etk_id": "ETK-2026-3242",
  "cve_id": "CVE-2026-120240",
  "display_id": "CVE-2026-120240",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-114882",
  "status": "published",
  "anchor_state": "anchored",
  "title": "OS command injection in WAVLINK WN553X1-B WireGuard CLI handler",
  "summary": "WAVLINK WN553X1-B devices running firmware V260403_2.0.0 are affected by command injection in the WireGuard CLI group-management handler. An attacker who can remotely access the affected handler may execute operating-system commands through crafted group-related input.",
  "mitigation": "Restrict access to the device management interface and disable or limit WireGuard CLI group management where possible, especially from untrusted networks. Monitor vendor support channels for a firmware update, as no fixed version is recorded.",
  "vendor": "WAVLINK",
  "product": "WN553X1-B",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "V260403_2.0.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "WN553X1-B",
      "purl": null
    }
  ],
  "cwes": [
    78
  ],
  "cvss_score": 9.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.81289845,
  "t0_at": "2026-11-01T18:30:11.233000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-11-01T18:30:11.233000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-01T18:30:11.233000+00:00",
      "url": "https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wireguard_cli_group_command_injection.md"
    },
    "trigger_signal": {
      "at": "2026-11-01T18:30:11.233000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-01T18:30:11.233000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120240"
    }
  }
}