CVE-2026-66374

{"id": "CVE-2026-66374", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66374", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-27T14:35:53.718782Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 5.3, "exploitabilityScore": 2.2}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "nic", "product": "Knot Resolver", "versions": [{"status": "affected", "version": "0", "lessThan": "6.4.1", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-25T01:16:26.423", "references": [{"url": "https://github.com/venglin/knot-doq", "source": "cve@mitre.org"}, {"url": "https://openwall.com/lists/oss-security/2026/07/23/6", "source": "cve@mitre.org"}, {"url": "https://github.com/venglin/knot-doq", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-1284"}]}], "descriptions": [{"lang": "en", "value": "Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path."}], "lastModified": "2026-07-30T19:32:25.133", "sourceIdentifier": "cve@mitre.org"}