{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.5.8"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "fb671aa5d1b4317fabe5aab3e3713ca4b5798f95"
            },
            {
              "fixed": "287f5ac31dfdc074669182f51ece637706070eeb"
            }
          ],
          "repo": "https://github.com/jsummers/deark",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In Deark before 1.5.8, a specially crafted input file can cause a NULL pointer dereference in the dbuf_write function (src/deark-dbuf.c).",
  "id": "CVE-2021-28855",
  "modified": "2026-03-15T21:47:26.563660001Z",
  "published": "2021-04-14T17:15:14.363Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28855"
    },
    {
      "type": "FIX",
      "url": "https://fatihhcelik.github.io/posts/NULL-Pointer-Dereference-Deark/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jsummers/deark/commit/287f5ac31dfdc074669182f51ece637706070eeb"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}