{
  "id": "CVE-2018-4063",
  "url": "https://spydr.io/cve/CVE-2018-4063",
  "published": "2019-05-06T19:29:00.637Z",
  "modified": "2026-06-17T01:58:18.623Z",
  "score": 8.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.27059,
  "epss_percentile": 0.97994,
  "exploited": true,
  "kev": {
    "added": "2025-12-12",
    "due": "2026-01-02",
    "action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability",
    "notes": "https://www.cisa.gov/news-events/ics-advisories/icsa-19-122-03 ; https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003 ; https://source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol ; https://nvd.nist.gov/vuln/detail/CVE-2018-4063"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "sierrawireless"
  ],
  "products": [
    "Sierra Wireless"
  ],
  "cwes": [
    "CWE-434"
  ],
  "description": "An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 8.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html",
      "tags": [
        "Exploit",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/108147",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ]
    },
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063",
      "tags": [
        "US Government Resource"
      ]
    },
    {
      "url": "https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2018-4063",
  "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."
    }
  ]
}