CVE-2025-40776

{"id": "CVE-2025-40776", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-officer@isc.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.9}]}, "published": "2025-07-16T14:15:25.053", "references": [{"url": "https://kb.isc.org/docs/cve-2025-40776", "source": "security-officer@isc.org"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-officer@isc.org", "description": [{"lang": "en", "value": "CWE-349"}]}], "descriptions": [{"lang": "en", "value": "A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack.\nThis issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1."}, {"lang": "es", "value": "Un solucionador de cach\u00e9 con nombre configurado para enviar opciones de ECS (subred de cliente EDNS) podr\u00eda ser vulnerable a un ataque de envenenamiento de cach\u00e9. Este problema afecta a las versiones de BIND 9 de la 9.11.3-S1 a la 9.16.50-S1, de la 9.18.11-S1 a la 9.18.37-S1 y de la 9.20.9-S1 a la 9.20.10-S1."}], "lastModified": "2026-04-15T00:35:42.020", "sourceIdentifier": "security-officer@isc.org"}