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CVE-2018-18435

Estado: ModificadaAlta (7.8)—Exploit
Gravedad7.8Alta · CVSS 3.0
Probabilidad de explotación1.38 %mayor que el 72 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

KioWare Server versión 4.9.6 y versiones anteriores instalan de manera predeterminada "C:\kioware_com" con permisos de carpeta débiles que otorgan a cualquier usuario permiso completo "Todos: (F)" al contenido del directorio y sus subcarpetas. Además, el programa instala un servicio llamado "KWSService" que se ejecuta como "Localsystem", lo que permitirá a cualquier usuario escalar privilegios a "NT AUTHORITY\SYSTEM" sustituyendo el binario del servicio por uno malicioso.

CVSS

Puntuación base
7.8
Versión
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
1.38 %
Percentil entre todas las CVEs puntuadas
72
Fecha de la puntuación
22/10/2026

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).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Kioware — Kioware Server

CWE

Referencias

Mostrar las 10 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-18435",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/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": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-03-21T16:00:28.373",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/151031/KioWare-Server-4.9.6-Privilege-Escalation.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/active-labs/Advisories/blob/master/2019/ACTIVE-2019-002.md",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://m.kioware.com/news/kioware-press-releases/kioware_server_security_patch_update",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.exploit-db.com/exploits/46093/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.kioware.com/patch.aspx",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/151031/KioWare-Server-4.9.6-Privilege-Escalation.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/active-labs/Advisories/blob/master/2019/ACTIVE-2019-002.md",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://m.kioware.com/news/kioware-press-releases/kioware_server_security_patch_update",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/46093/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.kioware.com/patch.aspx",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "KioWare Server version 4.9.6 and older installs by default to \"C:\\kioware_com\" with weak folder permissions granting any user full permission \"Everyone: (F)\" to the contents of the directory and it's sub-folders. In addition, the program installs a service called \"KWSService\" which runs as \"Localsystem\", this will allow any user to escalate privileges to \"NT AUTHORITY\\SYSTEM\" by substituting the service's binary with a malicious one."
    },
    {
      "lang": "es",
      "value": "KioWare Server versión 4.9.6 y versiones anteriores instalan de manera predeterminada \"C:\\kioware_com\" con permisos de carpeta débiles que otorgan a cualquier usuario permiso completo \"Todos: (F)\" al contenido del directorio y sus subcarpetas. Además, el programa instala un servicio llamado \"KWSService\" que se ejecuta como \"Localsystem\", lo que permitirá a cualquier usuario escalar privilegios a \"NT AUTHORITY\\SYSTEM\" sustituyendo el binario del servicio por uno malicioso."
    }
  ],
  "lastModified": "2026-06-17T01:47:17.800",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kioware:kioware_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F23219CE-BE21-4B65-9300-A1601ADE47D8",
              "versionEndIncluding": "4.9.6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}