{"id":"CVE-2026-33602","summary":"Off-by-one access when processing crafted UDP responses","details":"A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.","modified":"2026-07-08T08:12:49.176668032Z","published":"2026-04-22T13:45:34.667Z","related":["SUSE-SU-2026:22319-1","openSUSE-SU-2026:10632-1","openSUSE-SU-2026:21015-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33602.json","cna_assigner":"OX"},"references":[{"type":"WEB","url":"https://repo.powerdns.com/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33602.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33602"},{"type":"ADVISORY","url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html"},{"type":"PACKAGE","url":"https://github.com/PowerDNS/pdns"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/powerdns/pdns","events":[{"introduced":"298a9d67fb760a12eabe89164f92fb814572aea8"},{"fixed":"642a2bb5b67b2bf5c856819273d8f41fecbc0da8"},{"introduced":"89747e81bc60d7950276d5fda3ca669fa81b7cf9"},{"fixed":"bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d"}],"database_specific":{"cpe":"cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.9.0"},{"fixed":"1.9.13"},{"introduced":"2.0.0"},{"fixed":"2.0.4"}],"source":"CPE_RANGE"}}],"versions":["dnsdist-2.0.2","dnsdist-2.0.1","dnsdist-1.9.11","dnsdist-2.0.0","dnsdist-1.9.10","dnsdist-1.9.9","dnsdist-1.9.8","dnsdist-1.9.7","dnsdist-1.9.6","dnsdist-1.9.5","dnsdist-1.9.4","dnsdist-1.9.3","dnsdist-1.9.2","dnsdist-1.9.1","dnsdist-1.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33602.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}