{
  "cveId": "CVE-2026-12244",
  "url": "https://patchblox.com/security/cve/CVE-2026-12244",
  "summary": "CVE-2026-12244 is fixed in nsd on 1 platform, first by nsd 4.14.0-1ubuntu0.1~esm1, released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "nsd: If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS me...",
  "description": "If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let\u0027s an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size \u003E 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes",
  "published": "2026-06-24T17:00:00Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00487,
  "epssPercentile": 0.42216,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "nsd",
      "release": "Debian 14",
      "fixedVersion": "4.14.3-1",
      "fix": "DEBIAN-CVE-2026-12244",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-12244",
      "released": "2026-06-28T17:47:07Z"
    },
    {
      "platform": "linux",
      "product": "nsd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.14.0-1ubuntu0.1~esm1",
      "fix": "nsd 4.14.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-nsd-4.14.0-1ubuntu0.1-esm1",
      "released": "2026-06-24T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nsd",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.14.3-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21502-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21502-1",
      "released": "2026-07-29T09:24:11Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}