{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2025-54309",
  "revision": 1,
  "title": "CrushFTP — mishandled validation grants administrator access",
  "summary": "CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, where the proxy feature is not in use, mishandle validation on a business messaging channel (AS2) and hand a remote attacker administrator access over the web.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.94905,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2025-07-22",
    "prerequisites": "Network access to a server where the proxy feature is not in use; no credentials needed."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "CrushFTP 10.8.5",
      "CrushFTP 11.3.4_23"
    ]
  },
  "kill_chain": "initial_access",
  "recommended_action": "Upgrade CrushFTP to 10.8.5 or 11.3.4_23 now; it ran as a zero-day in July 2025, so review administrator accounts and file transfer logs.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2025-54309",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2025-54309",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2025-54309",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54309",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025"
    },
    {
      "type": "writeup",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability"
    },
    {
      "type": "writeup",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability"
    }
  ],
  "published_at": "2025-07-18T19:15:25.353Z",
  "issued_at": "2026-09-24T08:51:39.744Z",
  "tags": [
    "crushftp",
    "file-transfer",
    "authentication-bypass",
    "zero-day",
    "kev"
  ]
}