{
  "cveId": "CVE-2021-20201",
  "url": "https://patchblox.com/security/cve/CVE-2021-20201",
  "summary": "CVE-2021-20201 is fixed in 2 products on 1 platform, first by RHSA-2021:1924, released May 18, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "spice-server: The Simple Protocol for Independent Computing Environments (SPICE) is a remote display system built for virtual envir...",
  "description": "The Simple Protocol for Independent Computing Environments (SPICE) is a remote display system built for virtual environments which allows the user to view a computing \u0027desktop\u0027 environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures.\n\nSecurity Fix(es):\n\n* spice: Client initiated renegotiation denial of service (CVE-2021-20201)\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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.",
  "published": "2021-05-18T00:00:00Z",
  "severity": "Low",
  "cvss": 5.3,
  "epss": 0.02703,
  "epssPercentile": 0.86029,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "spice-server",
      "release": "RHEL 8",
      "fixedVersion": "0:0.14.3-4.el8",
      "fix": "RHSA-2021:1924",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1924",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "spice-server",
      "release": "ol 8",
      "fixedVersion": "0:0.14.3-4.el8",
      "fix": "ELSA-2021-1924",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1924",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "spice-server-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:0.14.3-4.el8",
      "fix": "RHSA-2021:1924",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1924",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "spice-server-devel",
      "release": "ol 8",
      "fixedVersion": "0:0.14.3-4.el8",
      "fix": "ELSA-2021-1924",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1924",
      "released": "2021-05-25T00:00:00Z"
    }
  ],
  "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"
  }
}