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CVE-2020-26535

Estado: ModificadaCrítica (9.8)—

An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).

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 (2)

Foxitsoftware — Foxit ReaderFoxitsoftware — Phantompdf

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-26535",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-02T08:15:12.493",
  "references": [
    {
      "url": "https://www.foxitsoftware.com/support/security-bulletins.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.foxitsoftware.com/support/security-bulletins.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation)."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Foxit Reader y PhantomPDF versiones anteriores a 10.1. Si TslAlloc intenta asignar el almacenamiento local de hilos (subprocesos) pero obtiene un valor de índice inaceptable, V8 lanza una excepción que conlleva a una violación de acceso de escritura (y una violación de acceso de lectura)"
    }
  ],
  "lastModified": "2026-06-17T03:08:09.257",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:foxitsoftware:foxit_reader:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "301584EF-3A6F-44AD-9A4F-261B28A8FCAA",
              "versionEndExcluding": "10.1"
            },
            {
              "criteria": "cpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E290754A-AAD1-4373-9D74-2F4AC0DD9E0C",
              "versionEndExcluding": "10.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}