cve-2026-19666

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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19666.json"
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    ],
    "title": "bind: BIND: Denial of Service via malformed DNS64 responses",
    "tracking": {
      "current_release_date": "2026-09-16T15:19:48+00:00",
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      "id": "CVE-2026-19666",
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      "revision_history": [
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          "date": "2026-09-16T14:02:30.453000+00:00",
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            "name": "Red Hat OpenShift Container Platform 4"
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          {
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            "name": "openshift/ose-rhel-coreos-8",
            "product": {
              "name": "openshift/ose-rhel-coreos-8",
              "product_id": "openshift/ose-rhel-coreos-8",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-19666",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "discovery_date": "2026-09-16T14:34:53.189451+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2535477"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in BIND. When a resolver is configured to use DNS64, a specially crafted, malformed answer from an authoritative server can cause the `named` process to exit unexpectedly. This can lead to a Denial of Service (DoS) for clients relying on the affected resolver.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bind: BIND: Denial of Service via malformed DNS64 responses",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "known_affected": [
          "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-8",
          "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-9"
        ]
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-19666"
        },
        {
          "category": "external",
          "summary": "RHBZ#2535477",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535477"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-19666",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-19666"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-19666",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19666"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.20.29",
          "url": "https://downloads.isc.org/isc/bind9/9.20.29"
        },
        {
          "category": "external",
          "summary": "https://downloads.isc.org/isc/bind9/9.21.26",
          "url": "https://downloads.isc.org/isc/bind9/9.21.26"
        },
        {
          "category": "external",
          "summary": "https://kb.isc.org/docs/cve-2026-19666",
          "url": "https://kb.isc.org/docs/cve-2026-19666"
        }
      ],
      "release_date": "2026-09-16T14:02:30.453000+00:00",
      "remediations": [
        {
          "category": "none_available",
          "details": "Affected",
          "product_ids": [
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-8",
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-9"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-8",
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-9"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important",
          "product_ids": [
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-8",
            "red_hat_openshift_container_platform_4:openshift/ose-rhel-coreos-9"
          ]
        }
      ],
      "title": "bind: BIND: Denial of Service via malformed DNS64 responses"
    }
  ]
}