{
  "cveId": "CVE-2021-41690",
  "url": "https://patchblox.com/security/cve/CVE-2021-41690",
  "summary": "CVE-2021-41690 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2021-41690, released June 28, 2022. It is not reported as exploited. Patch Radar priority: High.",
  "title": "dcmtk: DCMTK through 3.6.6 does not handle memory free properly",
  "description": "DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.",
  "published": "2022-06-28T06:15:00Z",
  "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": 0.01838,
  "epssPercentile": 0.79099,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41690",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41690",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41690",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41690",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 14",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41690",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41690",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.2-3ubuntu0.1~esm1",
      "fix": "dcmtk 3.6.2-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dcmtk-3.6.2-3ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.4-2.1ubuntu0.1~esm1",
      "fix": "dcmtk 3.6.4-2.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dcmtk-3.6.4-2.1ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.6.6-5ubuntu0.1~esm1",
      "fix": "dcmtk 3.6.6-5ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dcmtk-3.6.6-5ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libdcmtk12",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.2-3ubuntu0.1~esm1",
      "fix": "libdcmtk12 3.6.2-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libdcmtk12-3.6.2-3ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libdcmtk14",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.4-2.1ubuntu0.1~esm1",
      "fix": "libdcmtk14 3.6.4-2.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libdcmtk14-3.6.4-2.1ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libdcmtk16",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.6.6-5ubuntu0.1~esm1",
      "fix": "libdcmtk16 3.6.6-5ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libdcmtk16-3.6.6-5ubuntu0.1-esm1",
      "released": "2022-12-02T08:15:00Z"
    }
  ],
  "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"
  }
}