{
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  "id": "RHSA-2025:21889",
  "related": [],
  "upstream": [
    "CVE-2021-25220",
    "CVE-2025-40778",
    "CVE-2025-40780"
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  "published": "2025-11-21T11:27:34Z",
  "modified": "2026-04-20T10:04:14Z",
  "summary": "Red Hat Security Advisory: bind security update",
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    {
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405827"
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    {
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405829"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2021-25220"
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    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-25220"
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25220"
    },
    {
      "type": "ARTICLE",
      "url": "https://kb.isc.org/docs/CVE-2021-25220"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2025-40778"
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    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40778"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40778"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-40780"
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    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40780"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40780"
    }
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}