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CVE-2025-66523

Estado: AnalizadaMedia (6.1)—

URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link.

This issue affects na1.foxitesign.foxit.com: before 2026‑01‑16.

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).

Tecnologías afectadas (1)

Foxit — Esign

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-66523",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-66523",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-20T18:07:34.333089Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "14984358-7092-470d-8f34-ade47a7658a2",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "affectedData": [
        {
          "vendor": "Foxit Software Inc.",
          "product": "na1.foxitesign.foxit.com",
          "versions": [
            {
              "status": "affected",
              "version": "before 2026‑01‑16"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-01-20T07:15:48.490",
  "references": [
    {
      "url": "https://www.foxit.com/support/security-bulletins.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link.\n\n\n\n\n\n\nThis issue affects na1.foxitesign.foxit.com: before 2026‑01‑16."
    },
    {
      "lang": "es",
      "value": "Los parámetros de URL se incrustan directamente en código JavaScript o atributos HTML sin la codificación o sanitización adecuadas. Esto permite a los atacantes inyectar scripts arbitrarios cuando un usuario autenticado visita un enlace manipulado.\n\nEste problema afecta a na1.foxitesign.foxit.com: antes del 16-01-2026."
    }
  ],
  "lastModified": "2026-06-17T09:56:58.897",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:foxit:esign:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B04F458C-B946-4F58-AC59-8C87FB5AD66B",
              "versionEndExcluding": "2026-01-16"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "14984358-7092-470d-8f34-ade47a7658a2"
}