« Volver al listado

CVE-2025-67853

Estado: AnalizadaAlta (7.5)—

A flaw was found in Moodle. A remote attacker could exploit a lack of proper rate limiting in the confirmation email service. This vulnerability allows attackers to more easily enumerate or guess user credentials, facilitating brute-force attacks against user accounts.

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

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

Explotación remota sin autenticación (AV:N/PR:N) de servicio web expuesto. Falta de rate limiting en confirmación de email facilita enumeración de credenciales y ataque de fuerza bruta contra cuentas de usuario.

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

Password PoliciesMulti-factor AuthenticationUpdate SoftwareVulnerability ScanningPrivileged Account ManagementNetwork Segmentation

Tecnologías afectadas (1)

Moodle — Moodle

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-67853",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-67853",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-03T15:43:42.458056Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "patrick@puiterwijk.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "patrick@puiterwijk.org",
      "affectedData": [
        {
          "versions": [
            {
              "status": "affected",
              "version": "4.1.0",
              "lessThan": "4.1.22",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.4.0",
              "lessThan": "4.4.12",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.5.0",
              "lessThan": "4.5.8",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.0.0",
              "lessThan": "5.0.4",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.1.0",
              "lessThan": "5.1.1",
              "versionType": "semver"
            }
          ],
          "packageName": "moodle",
          "collectionURL": "https://github.com/moodle/moodle/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-02-03T11:15:55.663",
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2025-67853",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "patrick@puiterwijk.org"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2423847",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "patrick@puiterwijk.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "patrick@puiterwijk.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-307"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Moodle. A remote attacker could exploit a lack of proper rate limiting in the confirmation email service. This vulnerability allows attackers to more easily enumerate or guess user credentials, facilitating brute-force attacks against user accounts."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en Moodle. Un atacante remoto podría explotar una limitación de tasa inadecuada en el servicio de correo electrónico de confirmación. Esta vulnerabilidad permite a los atacantes enumerar o adivinar credenciales de usuario con mayor facilidad, facilitando ataques de fuerza bruta contra cuentas de usuario."
    }
  ],
  "lastModified": "2026-06-17T09:58:11.450",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A2DF3FD1-3A53-41D9-890B-F6DE973AB09C",
              "versionEndExcluding": "4.1.22"
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CED60CDC-8F12-481C-9ADD-8559860A2B3C",
              "versionEndExcluding": "4.4.11",
              "versionStartIncluding": "4.4.0"
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C0CC5CF8-4808-41A5-B8A1-B0D6C575E5DC",
              "versionEndExcluding": "4.5.8",
              "versionStartIncluding": "4.5.0"
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "06F81442-AEEB-483D-90A9-93DDBA5B95D6",
              "versionEndExcluding": "5.0.4",
              "versionStartIncluding": "5.0.0"
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:5.1.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "567FEE12-0E75-4F0C-B22E-E76990C80E1B"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "patrick@puiterwijk.org"
}