{
  "id": "CVE-2018-19943",
  "url": "https://spydr.io/cve/CVE-2018-19943",
  "published": "2020-10-28T18:15:12.520Z",
  "modified": "2026-08-13T05:17:17.240Z",
  "score": 5.4,
  "severity": "medium",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
  "score_source": "NVD",
  "epss": 0.21476,
  "epss_percentile": 0.9756,
  "exploited": true,
  "kev": {
    "added": "2022-05-24",
    "due": "2022-06-14",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Known",
    "name": "QNAP NAS File Station Cross-Site Scripting Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2018-19943"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "QNAP Systems Inc."
  ],
  "products": [
    "QNAP Systems Inc. QTS"
  ],
  "cwes": [
    "CWE-79",
    "CWE-80"
  ],
  "description": "If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. QNAP has already fixed these issues in the following QTS versions. QTS 4.4.2.1270 build 20200410 and later QTS 4.4.1.1261 build 20200330 and later QTS 4.3.6.1263 build 20200330 and later QTS 4.3.4.1282 build 20200408 and later QTS 4.3.3.1252 build 20200409 and later QTS 4.2.6 build 20200421 and later",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 5.4,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://www.qnap.com/zh-tw/security-advisory/qsa-20-01",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19943",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19943",
  "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."
    }
  ]
}