{
  "cveId": "CVE-2021-39920",
  "url": "https://patchblox.com/security/cve/CVE-2021-39920",
  "summary": "CVE-2021-39920 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2021-39920, released November 18, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "wireshark: NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet inject...",
  "description": "NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file",
  "published": "2021-11-18T19:15:08Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.03289,
  "epssPercentile": 0.8856,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "wireshark",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.6.0-1",
      "fix": "DEBIAN-CVE-2021-39920",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-39920",
      "released": "2021-11-18T19:15:08Z"
    },
    {
      "platform": "linux",
      "product": "wireshark",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.6.0-1",
      "fix": "DEBIAN-CVE-2021-39920",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-39920",
      "released": "2021-11-18T19:15:08Z"
    },
    {
      "platform": "linux",
      "product": "wireshark",
      "release": "Debian 14",
      "fixedVersion": "3.6.0-1",
      "fix": "DEBIAN-CVE-2021-39920",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-39920",
      "released": "2021-11-18T19:15:08Z"
    },
    {
      "platform": "linux",
      "product": "wireshark-cli",
      "release": "amzn 2023",
      "fixedVersion": "1:4.0.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2023-038",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-038",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "wireshark-cli-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:4.0.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2023-038",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-038",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "wireshark-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:4.0.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2023-038",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-038",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "wireshark-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:4.0.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2023-038",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-038",
      "released": "2023-02-17T20:44:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}