CVE-2026-119756

{
  "etk_id": "ETK-2026-3978",
  "cve_id": "CVE-2026-119756",
  "display_id": "CVE-2026-119756",
  "ghsa_id": "GHSA-6g2f-6p9p-vvm8",
  "euvd_id": "EUVD-2026-120125",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap out-of-bounds write in Tasmota Device Groups handling",
  "summary": "Tasmota through 16.0.0 is affected by an out-of-bounds heap write while processing Device Groups UDP traffic. An unauthenticated attacker able to reach UDP port 4447 from the local network may corrupt device memory, causing a crash or potentially executing code.",
  "mitigation": "Update to a Tasmota build that includes commit e97e1e4. Until that is applied, restrict UDP port 4447 to trusted management and device networks.",
  "vendor": "arendst",
  "product": "Tasmota",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 16.0.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Tasmota",
      "purl": null
    }
  ],
  "cwes": [
    805
  ],
  "cvss_score": 9.3,
  "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:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 163.09973233333332,
  "t0_at": "2026-11-09T17:28:33.128000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-09T17:28:33.128000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T17:28:33.128000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-119756"
    }
  }
}