« Volver al listado

CVE-2026-91817

Estado: AnalizadaMedia (6.1)—

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash.

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.

AV:L, UI:R (requiere interacción del usuario abriendo PDF) → T1203. Out-of-bounds read causa crash (DoS) y potencial fuga de memoria; CVSS destaca C:L, A:H.

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

Filter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareData Loss Prevention

Tecnologías afectadas (2)

Foxit — PDF EditorFoxit — PDF Reader

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-91817",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-91817",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-23T14:22:00.125904Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "14984358-7092-470d-8f34-ade47a7658a2",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "affectedData": [
        {
          "vendor": "Foxit Software Inc.",
          "product": "Foxit PDF Editor",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.2 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.7 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.6 and earlier"
            }
          ],
          "platforms": [
            "Windows"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Foxit Software Inc.",
          "product": "Foxit PDF Reader",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.2 and earlier"
            }
          ],
          "platforms": [
            "Windows"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-23T08:17:14.010",
  "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-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash."
    }
  ],
  "lastModified": "2026-10-01T20:23:59.847",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F56A28CE-B170-4EF6-9252-DAAAE95C8EFC",
              "versionEndIncluding": "13.2.5.63482"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ACB35909-C2E9-45E0-A63D-A80DCD8ECC24",
              "versionEndIncluding": "14.0.7.33751",
              "versionStartIncluding": "14.0.0.33046"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0C75FEE6-54F3-49C6-BAEA-A09D23BE5D64",
              "versionEndIncluding": "2023.3.0.23028",
              "versionStartIncluding": "2023.1.0.15510"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2C06BC41-9831-4AE3-B10B-3FC313D01580",
              "versionEndIncluding": "2024.4.1.27687",
              "versionStartIncluding": "2024.1.0.23997"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD0AAFC0-5B9B-4A11-8967-4699792850F1",
              "versionEndIncluding": "2025.3.0.35737",
              "versionStartIncluding": "2025.1.0.27937"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "757FC908-7C20-4D94-B5E4-83590D451EA1",
              "versionEndIncluding": "2026.2.0.39747",
              "versionStartIncluding": "2026.1.0.36452"
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "379C8399-B43C-47AE-BA7B-0FAC7682BF7B",
              "versionEndIncluding": "2026.2.0.39747"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "14984358-7092-470d-8f34-ade47a7658a2"
}