{
  "id": "CVE-2024-55956",
  "url": "https://spydr.io/cve/CVE-2024-55956",
  "published": "2024-12-13T21:15:13.767Z",
  "modified": "2026-08-05T05:16:42.863Z",
  "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": 0.93968,
  "epss_percentile": 0.99845,
  "exploited": true,
  "kev": {
    "added": "2024-12-17",
    "due": "2025-01-07",
    "action": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Known",
    "name": "Cleo Multiple Products Unauthenticated File Upload Vulnerability",
    "notes": "https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update-CVE-2024-55956 ; https://nvd.nist.gov/vuln/detail/CVE-2024-55956"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "cleo"
  ],
  "products": [
    "cleo harmony",
    "cleo lexicom",
    "cleo vltrader"
  ],
  "cwes": [
    "CWE-77"
  ],
  "description": "In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary Bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Advisory-CVE-Pending",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.huntress.com/blog/threat-advisory-oh-no-cleo-cleo-software-actively-being-exploited-in-the-wild",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55956",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2024-55956",
  "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."
    }
  ]
}