CVE-2026-33599

{"id": "CVE-2026-33599", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33599", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-22T14:50:15.367548Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@open-xchange.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.6}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@open-xchange.com", "affectedData": [{"repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "modules": ["Discovery of Designated Resolvers"], "product": "DNSdist", "versions": [{"status": "affected", "version": "1.9.0", "lessThan": "1.9.13", "versionType": "semver"}, {"status": "affected", "version": "2.0.0", "lessThan": "2.0.4", "versionType": "semver"}], "packageName": "dnsdist", "programFiles": ["dnsdist-discovery.cc"], "collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected"}]}], "published": "2026-04-22T14:16:54.410", "references": [{"url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html", "tags": ["Vendor Advisory"], "source": "security@open-xchange.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-125"}]}], "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."}], "lastModified": "2026-06-17T10:37:46.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DCC2DF11-EC5C-4112-90F2-C266CB65D390", "versionEndExcluding": "1.9.13", "versionStartIncluding": "1.9.0"}, {"criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29865EC6-C1A0-40F3-B0BB-7F71F9C1DCB7", "versionEndExcluding": "2.0.4", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@open-xchange.com"}