CVE-2026-40012

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40012", "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "state": "PUBLISHED", "assignerShortName": "OX", "dateReserved": "2026-04-08T09:59:59.342Z", "datePublished": "2026-06-25T12:58:51.987Z", "dateUpdated": "2026-06-25T14:41:00.796Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "shortName": "OX", "dateUpdated": "2026-06-25T12:58:51.987Z"}, "title": "Information about ECS zero scoped answers might leak to clients that use a specific ECS", "datePublic": "2026-06-24T22:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "description": "Exposure of Resource to Wrong Sphere", "type": "CWE"}]}], "affected": [{"vendor": "PowerDNS", "product": "Recursor", "collectionURL": "https://repo.powerdns.com/", "packageName": "pdns-recursor", "repo": "https://github.com/PowerDNS/pdns", "modules": ["EDNS Client Subnet processing"], "programFiles": ["pdns_recursor.cc"], "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"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;</p>"}]}], "references": [{"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}}], "credits": [{"lang": "en", "value": "Danial Mahadzir", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-524", "lang": "en", "description": "CWE-524 Use of Cache Containing Sensitive Information"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-25T14:40:29.990781Z", "id": "CVE-2026-40012", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T14:41:00.796Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-40012", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-25T14:40:29.990781Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-524", "description": "CWE-524 Use of Cache Containing Sensitive Information"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T14:40:52.251Z"}}], "cna": {"title": "Information about ECS zero scoped answers might leak to clients that use a specific ECS", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Danial Mahadzir"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "modules": ["EDNS Client Subnet processing"], "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": ["pdns_recursor.cc"], "collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected"}], "datePublic": "2026-06-24T22:00:00.000Z", "references": [{"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html"}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;", "supportingMedia": [{"type": "text/html", "value": "<p>ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "Exposure of Resource to Wrong Sphere"}]}], "providerMetadata": {"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "shortName": "OX", "dateUpdated": "2026-06-25T12:58:51.987Z"}}}, "cveMetadata": {"cveId": "CVE-2026-40012", "state": "PUBLISHED", "dateUpdated": "2026-06-25T14:41:00.796Z", "dateReserved": "2026-04-08T09:59:59.342Z", "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "datePublished": "2026-06-25T12:58:51.987Z", "assignerShortName": "OX"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected", "modules": ["EDNS Client Subnet processing"], "packageName": "pdns-recursor", "product": "Recursor", "programFiles": ["pdns_recursor.cc"], "repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "versions": [{"lessThan": "5.2.11", "status": "affected", "version": "5.2.0", "versionType": "semver"}, {"lessThan": "5.3.8", "status": "affected", "version": "5.3.0", "versionType": "semver"}, {"lessThan": "5.4.3", "status": "affected", "version": "5.4.0", "versionType": "semver"}]}], "source": "security@open-xchange.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;"}, {"lang": "es", "value": "Las respuestas de \u00e1mbito cero de ECS se almacenan en la cach\u00e9 de paquetes y no deber\u00edan. Esto afecta solo a las configuraciones que tienen ECS habilitado;"}], "id": "CVE-2026-40012", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@open-xchange.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40012", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-25T14:40:29.990781Z", "version": "2.0.3"}}]}, "published": "2026-06-25T14:16:38.840", "references": [{"source": "security@open-xchange.com", "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html"}], "sourceIdentifier": "security@open-xchange.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-524"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.2.0,5.2.11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.3.0,5.3.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.0,5.4.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Recursor", "source": "cna", "vendor": "PowerDNS"}, "product": "recursor", "vendor": "powerdns"}], "created": "2026-06-25T16:15:15.469278+00:00", "updated": "2026-06-25T22:00:12.702911+00:00", "vendors": ["powerdns", "powerdns$PRODUCT$recursor"]}