CVE-2026-42387

{"id": "CVE-2026-42387", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42387", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-25T14:41:19.840992Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@open-xchange.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "affected": [{"source": "security@open-xchange.com", "affectedData": [{"repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "modules": ["Zone to cache"], "product": "Recursor", "versions": [{"status": "affected", "version": "5.2.0", "lessThan": "5.2.11", "versionType": "semver"}, {"status": "affected", "version": "5.3.0", "lessThan": "5.3.8", "versionType": "semver"}, {"status": "affected", "version": "5.4.0", "lessThan": "5.4.3", "versionType": "semver"}], "packageName": "pdns-recursor", "programFiles": ["zonemd.cc"], "collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected"}]}], "published": "2026-06-25T14:16:39.447", "references": [{"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html", "source": "security@open-xchange.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation."}], "lastModified": "2026-06-25T16:16:35.133", "sourceIdentifier": "security@open-xchange.com"}