{
  "cveId": "CVE-2021-42377",
  "url": "https://patchblox.com/security/cve/CVE-2021-42377",
  "summary": "CVE-2021-42377 is fixed in busybox on 1 platform, first by DEBIAN-CVE-2021-42377, released November 15, 2021. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "busybox: An attacker-controlled pointer free in Busybox\u0027s hush applet leads to denial of service and possible code execution w...",
  "description": "An attacker-controlled pointer free in Busybox\u0027s hush applet leads to denial of service and possible code execution when processing a crafted shell command, due to the shell mishandling the \u0026\u0026\u0026 string. This may be used for remote code execution under rare conditions of filtered command input.",
  "published": "2021-11-15T21:15:07Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.03615,
  "epssPercentile": 0.89568,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "busybox",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1:1.35.0-1",
      "fix": "DEBIAN-CVE-2021-42377",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-42377",
      "released": "2021-11-15T21:15:07Z"
    },
    {
      "platform": "linux",
      "product": "busybox",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:1.35.0-1",
      "fix": "DEBIAN-CVE-2021-42377",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-42377",
      "released": "2021-11-15T21:15:07Z"
    },
    {
      "platform": "linux",
      "product": "busybox",
      "release": "Debian 14",
      "fixedVersion": "1:1.35.0-1",
      "fix": "DEBIAN-CVE-2021-42377",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-42377",
      "released": "2021-11-15T21:15:07Z"
    }
  ],
  "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"
  }
}