{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "15.0.0"
              },
              {
                "fixed": "15.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "111ac6cf3c640a08eb34324253e2f2e34f35d7a5"
            }
          ],
          "repo": "https://github.com/technitiumsoftware/dnsserver",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-684"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42255.json"
  },
  "details": "Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.",
  "id": "CVE-2026-42255",
  "modified": "2026-07-15T01:49:06.055476438Z",
  "published": "2026-04-26T02:48:44.810Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#technitium-dns-server-change-log"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42255.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42255"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}