CVE-2023-40044

Estado: AnalizadaAlta (8.8)⚠ Explotación activa

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 90%
Percentil entre todas las CVEs puntuadas: 100
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

CISA KEV — explotada activamente

Añadida al catálogo: 5/10/2023
Plazo de remediación: 26/10/2023
Uso conocido en ransomware: Known

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement95 %
Impacto principalT1059.003 Windows Command Shellexecution90 %
Impacto secundarioT1005 Data from Local Systemcollection70 %

Vector AV:N/PR:L sin interacción usuario. Deserialization .NET en módulo Ad Hoc de servicio remoto FTP permite ejecución remota de comandos con impacto alto (C/I/A). KEV activo confirma explotabilidad operacional.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Execution Prevention Disable or Remove Feature or Program

Tecnologías afectadas (1)

Progress — WS FTP Server

CWE

CWE-502
CWE-502

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2023-40044",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-40044",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-03T16:29:04.428335Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@progress.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 10,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@progress.com",
      "affectedData": [
        {
          "vendor": "Progress Software Corporation",
          "modules": [
            "Ad Hoc Transfer Module"
          ],
          "product": "WS_FTP Server",
          "versions": [
            {
              "status": "affected",
              "version": "8.8.0",
              "lessThan": "8.8.2",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "8.7.0",
              "lessThan": "8.7.4",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2023-09-27T15:18:57.307",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://censys.com/cve-2023-40044/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://www.progress.com/ws_ftp",
      "tags": [
        "Product"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "https://www.theregister.com/2023/10/02/ws_ftp_update/",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "source": "security@progress.com"
    },
    {
      "url": "http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://censys.com/cve-2023-40044/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.progress.com/ws_ftp",
      "tags": [
        "Product"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.theregister.com/2023/10/02/ws_ftp_update/",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044",
      "tags": [
        "US Government Resource"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@progress.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system."
    },
    {
      "lang": "es",
      "value": "En las versiones del servidor WS_FTP anteriores a la 8.7.4 y 8.8.2, un atacante previamente autenticado podría aprovechar una vulnerabilidad de deserialización de .NET en el módulo Ad Hoc Transfer para ejecutar comandos remotos en el sistema operativo subyacente del servidor WS_FTP."
    }
  ],
  "lastModified": "2026-06-17T06:15:55.110",
  "cisaActionDue": "2023-10-26",
  "cisaExploitAdd": "2023-10-05",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "443CCFDE-4A61-40F1-96C1-B36BF9240773",
              "versionEndExcluding": "8.7.4"
            },
            {
              "criteria": "cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "670AEEB3-B2B3-41DA-8188-4F1A4E02F0AD",
              "versionEndExcluding": "8.8.2",
              "versionStartIncluding": "8.8"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@progress.com",
  "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability"
}