{
  "id": "CVE-2019-11708",
  "url": "https://spydr.io/cve/CVE-2019-11708",
  "published": "2019-07-23T14:15:15.327Z",
  "modified": "2026-06-17T02:13:28.273Z",
  "score": 10,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.55874,
  "epss_percentile": 0.99023,
  "exploited": true,
  "kev": {
    "added": "2022-05-23",
    "due": "2022-06-13",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2019-11708"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Mozilla"
  ],
  "products": [
    "Mozilla Firefox ESR",
    "Mozilla Firefox",
    "Mozilla Thunderbird"
  ],
  "cwes": [
    "CWE-20"
  ],
  "description": "Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 10,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1559858",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://security.gentoo.org/glsa/201908-12",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2019-19/",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2019-20/",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11708",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11708",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}