CVE-2026-19630

{
  "etk_id": "ETK-2026-2320",
  "cve_id": "CVE-2026-19630",
  "display_id": "CVE-2026-19630",
  "ghsa_id": null,
  "euvd_id": null,
  "status": "in_pipeline",
  "anchor_state": "anchored",
  "title": "Resource exhaustion in ISC BIND 9 DNS message processing",
  "summary": "BIND 9 resolvers in the listed affected release ranges can consume excessive CPU time and memory while processing specially structured inbound DNS messages. An attacker able to send such messages to a vulnerable resolver can degrade its availability.",
  "mitigation": "Limit network access to affected resolver services and restrict recursive queries to trusted clients where feasible. Monitor resolver resource use and apply an upstream update when a fixed release is available.",
  "vendor": "ISC",
  "product": "BIND 9",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.11.0, <= 9.18.50",
        ">= 9.20.0, <= 9.20.29",
        ">= 9.21.0, <= 9.21.26",
        ">= 9.11.3-S1, <= 9.18.50-S1",
        ">= 9.20.9-S1, <= 9.20.29-S1"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "BIND 9",
      "purl": null
    }
  ],
  "cwes": [
    407
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": null,
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": null,
  "t0_at": "2026-10-21T12:41:04.379000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-21T12:41:04.379000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T12:41:04.379000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-19630"
    }
  }
}