CVE-2026-120281

{
  "etk_id": "ETK-2026-3251",
  "cve_id": "CVE-2026-120281",
  "display_id": "CVE-2026-120281",
  "ghsa_id": "GHSA-rg96-pw5p-hj64",
  "euvd_id": "EUVD-2026-114914",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stack buffer overflow in WN536AX6-A OpenVPN handler",
  "summary": "WAVLINK WN536AX6-A devices running firmware V260507 are affected by a stack-based buffer overflow in the OpenVPN handler. A remote unauthenticated attacker may overwrite stack memory through the affected handler. Exploitation requires network access to that service on an affected device.",
  "mitigation": "Disable the OpenVPN service if it is not required, or restrict access to trusted networks and administrators only. Monitor for and apply a vendor firmware update when one becomes available.",
  "vendor": "WAVLINK",
  "product": "WN536AX6-A",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "V260507"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "WN536AX6-A",
      "purl": null
    }
  ],
  "cwes": [
    121
  ],
  "cvss_score": 10,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": 14.956419316666667,
  "t0_at": "2026-11-02T00:30:18.106000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-11-02T00:30:18.106000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-02T00:30:18.106000+00:00",
      "url": "https://github.com/F-yyjy/cve/blob/main/WN536AX6-A_openvpn_ip.md"
    },
    "trigger_signal": {
      "at": "2026-11-02T00:30:18.106000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-02T00:30:18.106000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120281"
    }
  }
}