CVE-2026-1519

{"id": "CVE-2026-1519", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "security-officer@isc.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-03-25T14:16:33.110", "references": [{"url": "https://downloads.isc.org/isc/bind9/9.18.47", "source": "security-officer@isc.org"}, {"url": "https://downloads.isc.org/isc/bind9/9.20.21", "source": "security-officer@isc.org"}, {"url": "https://downloads.isc.org/isc/bind9/9.21.20", "source": "security-officer@isc.org"}, {"url": "https://kb.isc.org/docs/cve-2026-1519", "source": "security-officer@isc.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-officer@isc.org", "description": [{"lang": "en", "value": "CWE-606"}]}], "descriptions": [{"lang": "en", "value": "If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).\nThis issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1."}], "lastModified": "2026-03-25T15:41:33.977", "sourceIdentifier": "security-officer@isc.org"}