{
  "threat_severity" : "Important",
  "public_date" : "2026-03-25T13:25:19Z",
  "bugzilla" : {
    "description" : "bind: BIND: Denial of Service via maliciously crafted DNSSEC-validated zone",
    "id" : "2451305",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2451305"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-770",
  "details" : [ "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.", "A flaw was found in BIND. A remote attacker could exploit this vulnerability by sending a maliciously crafted DNSSEC-validated zone to a BIND resolver. This could cause the resolver to consume excessive CPU resources, leading to a denial of service (DoS) for legitimate users." ],
  "statement" : "This vulnerability is rated as Important. A flaw in BIND allows a remote attacker to cause a Denial of Service by sending a maliciously crafted DNSSEC-validated zone to a BIND resolver. Red Hat systems running BIND configured for DNSSEC validation are affected. Authoritative-only BIND servers are generally not impacted unless configured to perform recursive queries.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-04-15T00:00:00Z",
    "advisory" : "RHSA-2026:8312",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.1",
    "package" : "bind-32:9.18.33-10.el10_1.3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6 Extended Lifecycle Support  - EXTENSION",
    "release_date" : "2026-04-28T00:00:00Z",
    "advisory" : "RHSA-2026:11372",
    "cpe" : "cpe:/o:redhat:rhel_els:6",
    "package" : "bind-32:9.8.2-0.68.rc1.el6_10.18"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2026-04-28T00:00:00Z",
    "advisory" : "RHSA-2026:11371",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "bind-32:9.11.4-26.P2.el7_9.20"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-04-14T00:00:00Z",
    "advisory" : "RHSA-2026:8155",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "bind9.16-32:9.16.23-0.22.el8_10.5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-04-15T00:00:00Z",
    "advisory" : "RHSA-2026:8352",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "bind-32:9.11.36-16.el8_10.7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-04-15T00:00:00Z",
    "advisory" : "RHSA-2026:8352",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "bind-32:9.11.36-16.el8_10.7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:16064",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.4",
    "package" : "bind-32:9.11.26-4.el8_4.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:16064",
    "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.4",
    "package" : "bind-32:9.11.26-4.el8_4.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:16060",
    "cpe" : "cpe:/a:redhat:rhel_aus:8.6",
    "package" : "bind-32:9.11.36-3.el8_6.12"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:16060",
    "cpe" : "cpe:/a:redhat:rhel_tus:8.6",
    "package" : "bind-32:9.11.36-3.el8_6.12"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:16060",
    "cpe" : "cpe:/a:redhat:rhel_e4s:8.6",
    "package" : "bind-32:9.11.36-3.el8_6.12"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:15890",
    "cpe" : "cpe:/a:redhat:rhel_tus:8.8",
    "package" : "bind-32:9.11.36-8.el8_8.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
    "release_date" : "2026-05-11T00:00:00Z",
    "advisory" : "RHSA-2026:15890",
    "cpe" : "cpe:/a:redhat:rhel_e4s:8.8",
    "package" : "bind-32:9.11.36-8.el8_8.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-04-13T00:00:00Z",
    "advisory" : "RHSA-2026:7915",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "bind9.18-32:9.18.29-5.el9_7.4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-04-14T00:00:00Z",
    "advisory" : "RHSA-2026:8075",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "bind-32:9.16.23-34.el9_7.2"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-04-07T00:00:00Z",
    "advisory" : "RHSA-2026:6935",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "bind-main-9.18.48-1.hum1"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "dhcp",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "rhcos",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-1519\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-1519\nhttps://downloads.isc.org/isc/bind9/9.18.47\nhttps://downloads.isc.org/isc/bind9/9.20.21\nhttps://downloads.isc.org/isc/bind9/9.21.20\nhttps://kb.isc.org/docs/cve-2026-1519" ],
  "name" : "CVE-2026-1519",
  "mitigation" : {
    "value" : "To mitigate this issue, disable DNSSEC validation on affected BIND resolvers. Alternatively, configure the BIND server as authoritative-only if recursive queries are not required. Disabling DNSSEC validation may reduce the security posture of the DNS resolver. A restart of the BIND service (`named`) is required for these changes to take effect and may temporarily interrupt DNS resolution.",
    "lang" : "en:us"
  },
  "csaw" : false
}