{
  "cveId": "CVE-2021-20325",
  "url": "https://patchblox.com/security/cve/CVE-2021-20325",
  "summary": "CVE-2021-20325 is fixed in 11 products on 1 platform, first by RHSA-2021:4537, released November 9, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "httpd-tools: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es...",
  "description": "The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es):\n\n* httpd: Regression of CVE-2021-40438 and CVE-2021-26691 fixes in Red Hat Enterprise Linux 8.5 (CVE-2021-20325)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2021-11-09T00:00:00Z",
  "severity": "Important",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.01593,
  "epssPercentile": 0.75868,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "httpd",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2597\u002Bc4b14997.alma",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd",
      "release": "rocky 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B714\u002B5ec56ee8",
      "fix": "RLSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2597\u002Bc4b14997.alma",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-devel",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2597\u002Bc4b14997.alma",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-filesystem",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2597\u002Bc4b14997.alma",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-manual",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
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      "release": "RHEL 8",
      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "httpd-tools",
      "release": "almalinux 8",
      "fixedVersion": "2.4.37-43.module_el8.5.0\u002B2597\u002Bc4b14997.alma",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "httpd-tools",
      "release": "ol 8",
      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
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      "release": "RHEL 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B8625\u002Bd397f3da",
      "fix": "RHSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4537",
      "released": "2021-11-09T00:00:00Z"
    },
    {
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      "product": "mod_http2",
      "release": "almalinux 8",
      "fixedVersion": "1.15.7-3.module_el8.5.0\u002B2609\u002Bb30d9eec",
      "fix": "ALSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
      "platform": "linux",
      "product": "mod_http2",
      "release": "ol 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B20024\u002Bb87b2deb",
      "fix": "ELSA-2021-4537",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
    },
    {
      "platform": "linux",
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      "release": "rocky 8",
      "fixedVersion": "0:1.15.7-3.module\u002Bel8.4.0\u002B553\u002B7a69454b",
      "fix": "RLSA-2021:4537",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4537",
      "released": "2021-11-09T19:25:44Z"
    },
    {
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      "fixedVersion": "0:2.4.37-43.module\u002Bel8.5.0\u002B13064\u002Bc4b14997",
      "fix": "RHSA-2021:4537",
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      "released": "2021-11-09T00:00:00Z"
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    {
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      "release": "almalinux 8",
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      "fix": "ALSA-2021:4537",
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      "released": "2021-11-09T19:25:44Z"
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    {
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      "fixedVersion": "0:2.4.37-43.0.1.module\u002Bel8.5.0\u002B20426\u002B404a9eb9",
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      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4537",
      "released": "2021-11-18T00:00:00Z"
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    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}