{
  "cveId": "CVE-2021-41687",
  "url": "https://patchblox.com/security/cve/CVE-2021-41687",
  "summary": "CVE-2021-41687 is fixed in 4 products on 1 platform, first by dcmtk 3.6.2-3ubuntu0.1~esm3, 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 program malloc a heap memory for parsing data, but does not free it when error in parsing. Sending specific requests to the dcmqrdb program incur the memory leak. An attacker can use it to launch a DoS attack.",
  "published": "2022-06-28T06:15:00Z",
  "severity": "Low",
  "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 11.6 (bullseye)",
      "fixedVersion": "3.6.5-1\u002Bdeb11u1",
      "fix": "DLA-4038-1",
      "url": "https://patchblox.com/security/fix/linux/dla-4038-1",
      "released": "2025-01-31T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41687",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41687",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Debian 14",
      "fixedVersion": "3.6.7-1",
      "fix": "DEBIAN-CVE-2021-41687",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-41687",
      "released": "2022-06-28T13:15:10Z"
    },
    {
      "platform": "linux",
      "product": "dcmtk",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.2-3ubuntu0.1~esm3",
      "fix": "dcmtk 3.6.2-3ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dcmtk-3.6.2-3ubuntu0.1-esm3",
      "released": "2022-06-28T06:15:00Z"
    },
    {
      "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~esm3",
      "fix": "libdcmtk12 3.6.2-3ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libdcmtk12-3.6.2-3ubuntu0.1-esm3",
      "released": "2022-06-28T06:15:00Z"
    },
    {
      "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": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}