{
  "id": "CVE-2018-20753",
  "url": "https://spydr.io/cve/CVE-2018-20753",
  "published": "2019-02-05T06:29:00.593Z",
  "modified": "2026-08-13T05:17:18.220Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.29551,
  "epss_percentile": 0.98148,
  "exploited": true,
  "kev": {
    "added": "2022-04-13",
    "due": "2022-05-04",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Known",
    "name": "Kaseya VSA Remote Code Execution Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2018-20753"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "kaseya"
  ],
  "products": [
    "kaseya virtual system administrator"
  ],
  "cwes": [],
  "description": "Kaseya VSA RMM before R9.3 9.3.0.35, R9.4 before 9.4.0.36, and R9.5 before 9.5.0.5 allows unprivileged remote attackers to execute PowerShell payloads on all managed devices. In January 2018, attackers actively exploited this vulnerability in the wild.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20753",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20753",
  "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."
    }
  ]
}