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CVE-2025-65203

Estado: AnalizadaAlta (7.1)—

KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials into documents rendered under a browser-enforced CSP directive and iframe attribute sandbox, allowing attacker-controlled script in the sandboxed document to access populated form fields and exfiltrate credentials.

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.

Requiere interacción del usuario (UI:R) para rellenar credenciales en formulario; T1185 por acceso a credenciales almacenadas; T1552.007 (credenciales en memoria) por exfiltración desde campos de formulario en documento sandboxed.

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

User Account ManagementUser TrainingPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Keepassxc — Keepassxc-browser

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-65203",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-65203",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-12-17T18:24:55.051172Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-12-17T18:15:48.860",
  "references": [
    {
      "url": "https://github.com/keepassxreboot/keepassxc-browser/issues/2647",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/keepassxreboot/keepassxc-browser/pull/2648",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        },
        {
          "lang": "en",
          "value": "CWE-353"
        },
        {
          "lang": "en",
          "value": "CWE-640"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials into documents rendered under a browser-enforced CSP directive and iframe attribute sandbox, allowing attacker-controlled script in the sandboxed document to access populated form fields and exfiltrate credentials."
    }
  ],
  "lastModified": "2026-06-17T09:55:32.460",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:keepassxc:keepassxc-browser:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BFE9A6CC-9DA6-4C10-8C1C-42B97F643826",
              "versionEndIncluding": "1.9.9.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}