{
  "cveId": "CVE-2021-40647",
  "url": "https://patchblox.com/security/cve/CVE-2021-40647",
  "summary": "CVE-2021-40647 is fixed in man2html on 1 platform, first by DEBIAN-CVE-2021-40647, released September 9, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "man2html: In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of t...",
  "description": "In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn\u0027t aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.",
  "published": "2022-09-09T18:15:09Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00337,
  "epssPercentile": 0.27211,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "man2html",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.6g-16",
      "fix": "DEBIAN-CVE-2021-40647",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-40647",
      "released": "2022-09-09T18:15:09Z"
    },
    {
      "platform": "linux",
      "product": "man2html",
      "release": "Debian 14",
      "fixedVersion": "1.6g-16",
      "fix": "DEBIAN-CVE-2021-40647",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-40647",
      "released": "2022-09-09T18:15:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}