{
  "cveId": "CVE-2021-3450",
  "url": "https://patchblox.com/security/cve/CVE-2021-3450",
  "summary": "CVE-2021-3450 is fixed in 6 products on 1 platform, first by RHSA-2021:1024, released March 30, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "OpenSSL: CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT",
  "description": "OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.\n\nSecurity Fix(es):\n\n* openssl: NULL pointer dereference in signature_algorithms processing (CVE-2021-3449)\n\n* openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT (CVE-2021-3450)\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": "2021-03-30T00:00:00Z",
  "severity": "Important",
  "cvss": 7.4,
  "epss": 0.18339,
  "epssPercentile": 0.97243,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Unlikely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-3450",
  "fixes": [
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-15.el8_3",
      "fix": "RHSA-2021:1024",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1024",
      "released": "2021-03-30T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debugsource",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-15.el8_3",
      "fix": "RHSA-2021:1024",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1024",
      "released": "2021-03-30T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-15.el8_3",
      "fix": "RHSA-2021:1024",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1024",
      "released": "2021-03-30T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1g-15.el8_3",
      "fix": "RHSA-2021:1024",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1024",
      "released": "2021-03-30T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-static",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1g-15.ksplice1.el8_3",
      "fix": "ELSA-2021-9151",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9151",
      "released": "2021-04-01T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}