« Volver al listado

CVE-2021-35986

Estado: ModificadaBaja (3.3)—

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Type Confusion vulnerability. An unauthenticated attacker could leverage this vulnerability to read arbitrary system information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

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)

Adobe — Acrobat DCAdobe — Acrobat Reader DC

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-35986",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@adobe.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.3,
          "attackVector": "LOCAL",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@adobe.com",
      "affectedData": [
        {
          "vendor": "Adobe",
          "product": "Acrobat Reader",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "2020.004.30005"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "2017.011.30197"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "2021.005.20054"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "None"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-20T19:15:09.987",
  "references": [
    {
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-51.html",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "psirt@adobe.com"
    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1145/",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@adobe.com"
    },
    {
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-51.html",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1145/",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@adobe.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Type Confusion vulnerability. An unauthenticated attacker could leverage this vulnerability to read arbitrary system information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
    },
    {
      "lang": "es",
      "value": "Acrobat Reader DC versiones 2021.005.20054 (y anteriores), 2020.004.30005 (y anteriores), y 2017.011.30197 (y anteriores),  están afectadas por una vulnerabilidad Type Confusion. Un atacante no autenticado podría aprovechar esta vulnerabilidad para leer información arbitraria del sistema en el contexto del usuario actual. Una explotación de este problema requiere una interacción del usuario, ya que la víctima debe abrir un archivo malicioso."
    }
  ],
  "lastModified": "2026-06-17T03:58:09.387",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4A62CC78-7097-4825-8B08-2212B11E1F18",
              "versionEndIncluding": "21.005.20054",
              "versionStartIncluding": "15.008.20082"
            },
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7FDBB717-4658-426A-A98A-DA88EC0515B5",
              "versionEndIncluding": "17.011.30197",
              "versionStartIncluding": "17.011.30059"
            },
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "08E31636-C406-4C4B-8F1D-E9DFD5572FF9",
              "versionEndIncluding": "20.004.30005",
              "versionStartIncluding": "20.001.30005"
            },
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1EC1FC1B-592F-4635-A71C-1DCFAD3063DC",
              "versionEndIncluding": "21.005.20054",
              "versionStartIncluding": "15.008.20082"
            },
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D92E01B2-E4D3-414F-8852-294499AE4226",
              "versionEndIncluding": "17.011.30197",
              "versionStartIncluding": "17.011.30059"
            },
            {
              "criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B78681E4-7FA9-4D05-9A5B-1B19097B5C41",
              "versionEndIncluding": "20.004.30005",
              "versionStartIncluding": "20.001.30005"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@adobe.com"
}