{"id":"CVE-2026-42255","details":"Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.","modified":"2026-07-15T01:49:06.055476438Z","published":"2026-04-26T02:48:44.810Z","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"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/technitiumsoftware/dnsserver","events":[{"introduced":"0"},{"fixed":"111ac6cf3c640a08eb34324253e2f2e34f35d7a5"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"15.0.0"},{"fixed":"15.0"}]}}],"versions":["v14.3.0","v14.2.0","v14.1.0","v14.0.1","v14.0.0","v13.6.0","v13.4.3","v13.4.2","v13.4.1","v13.4","v13.3","v13.2.2","v13.2.1","v13.2","v13.1.1","v13.1","v13.0.2","v12.2.1","v12.2","v12.1","v12.0.1","v12.0","v11.5.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42255.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L"}]}