CVE-2026-123570

{
  "etk_id": "ETK-2026-3868",
  "cve_id": "CVE-2026-123570",
  "display_id": "CVE-2026-123570",
  "ghsa_id": "GHSA-6rvc-hrvg-mqf2",
  "euvd_id": "EUVD-2026-119455",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Remote memory-allocation denial of service in hickory-dns",
  "summary": "Hickory DNS versions 0.18 through 0.26.1 allocate memory based on untrusted DNS record-count fields. A remote attacker can send a crafted UDP DNS message, or a spoofed response to a client or resolver, to consume substantial memory and potentially cause denial of service. Exploitation requires the affected parser to process the attacker-controlled message.",
  "mitigation": "Upgrade hickory-dns to version 0.26.2 or later. Until upgraded, restrict exposure to untrusted DNS traffic and limit acceptance of spoofed responses where possible.",
  "vendor": "hickory-dns",
  "product": "hickory-dns",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.18"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "0.26.2"
      ],
      "package_name": "hickory-proto",
      "purl": "pkg:cargo/hickory-proto"
    }
  ],
  "cwes": [
    400
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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": 46.2139814,
  "t0_at": "2026-11-08T01:38:07.919000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-08T01:38:07.919000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-08T01:38:07.919000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-123570"
    }
  }
}