{"id":"CVE-2026-33599","state":"PUBLISHED","title":"Out-of-bounds read in service discovery","description":"A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default.","publishedAt":"2026-04-22T13:46:05.277Z","updatedAt":"2026-04-22T14:50:22.629Z","severity":{"score":3.1,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"OX"},"assigner":"OX","products":["PowerDNS DNSdist"],"affected":[{"vendor":"PowerDNS","product":"DNSdist","packageName":"dnsdist","defaultStatus":"unaffected","versions":[{"version":"1.9.0","status":"affected","lessThan":"1.9.13","versionType":"semver"},{"version":"2.0.0","status":"affected","lessThan":"2.0.4","versionType":"semver"}],"collectionURL":"https://repo.powerdns.com/","repo":"https://github.com/PowerDNS/pdns","modules":["Discovery of Designated Resolvers"],"programFiles":["dnsdist-discovery.cc"]}],"references":["https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33599.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33599","state":"PUBLISHED","datePublished":"2026-04-22T13:46:05.277Z","dateUpdated":"2026-04-22T14:50:22.629Z","assignerShortName":"OX","assignerOrgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateReserved":"2026-03-23T12:57:56.814Z"},"containers":{"cna":{"title":"Out-of-bounds read in service discovery","descriptions":[{"lang":"en","value":"A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default."}],"affected":[{"vendor":"PowerDNS","product":"DNSdist","packageName":"dnsdist","defaultStatus":"unaffected","versions":[{"version":"1.9.0","status":"affected","lessThan":"1.9.13","versionType":"semver"},{"version":"2.0.0","status":"affected","lessThan":"2.0.4","versionType":"semver"}],"collectionURL":"https://repo.powerdns.com/","repo":"https://github.com/PowerDNS/pdns","modules":["Discovery of Designated Resolvers"],"programFiles":["dnsdist-discovery.cc"]}],"references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"LOW","baseScore":3.1,"vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"}}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"OX","orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateUpdated":"2026-04-22T13:46:05.277Z"},"datePublic":"2026-04-21T22:00:00.000Z","credits":[{"lang":"en","value":"ylwango613","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T14:50:15.367548Z","id":"CVE-2026-33599","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","type":"CWE","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-22T14:50:22.629Z"}}]}}}