{
  "cveId": "CVE-2021-37220",
  "url": "https://patchblox.com/security/cve/CVE-2021-37220",
  "summary": "CVE-2021-37220 is fixed in 2 products on 1 platform, first by mupdf 1.12.0\u002Bds1-1ubuntu0.1~esm1, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "mupdf: MuPDF through 1.18.1 has an out-of-bounds write because the cached color converter does not properly consider the max...",
  "description": "MuPDF through 1.18.1 has an out-of-bounds write because the cached color converter does not properly consider the maximum key size of a hash table. This can, for example, be seen with crafted \u0022mutool draw\u0022 input.",
  "published": "2021-07-21T15:15:00Z",
  "severity": "Medium",
  "epss": 0.01331,
  "epssPercentile": 0.71267,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "mupdf",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.12.0\u002Bds1-1ubuntu0.1~esm1",
      "fix": "mupdf 1.12.0\u002Bds1-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-mupdf-1.12.0-ds1-1ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "mupdf",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.16.1\u002Bds1-1ubuntu1\u002Besm1",
      "fix": "mupdf 1.16.1\u002Bds1-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-mupdf-1.16.1-ds1-1ubuntu1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "mupdf-tools",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.12.0\u002Bds1-1ubuntu0.1~esm1",
      "fix": "mupdf-tools 1.12.0\u002Bds1-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-mupdf-tools-1.12.0-ds1-1ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "mupdf-tools",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.16.1\u002Bds1-1ubuntu1\u002Besm1",
      "fix": "mupdf-tools 1.16.1\u002Bds1-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-mupdf-tools-1.16.1-ds1-1ubuntu1-esm1",
      "released": "2023-08-22T12:16:00Z"
    }
  ],
  "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"
  }
}