« Volver al listado

CVE-2020-8335

Estado: ModificadaMedia (6.8)—

The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access.

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 (8)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-8335",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@lenovo.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 0.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.8,
          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/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": 0.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@lenovo.com",
      "affectedData": [
        {
          "vendor": "Lenovo",
          "product": "ThinkPad A285 BIOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "r0xuj70w",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Lenovo",
          "product": "ThinkPad A485 BIOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "r0wuj65w",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Lenovo",
          "product": "ThinkPad T495 BIOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "r12uj55w",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Lenovo",
          "product": "ThinkPad T495s/X395 BIOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "r13uj47w",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-09-01T22:15:10.313",
  "references": [
    {
      "url": "https://support.lenovo.com/us/en/product_security/LEN-30042",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@lenovo.com"
    },
    {
      "url": "https://support.lenovo.com/us/en/product_security/LEN-30042",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access."
    },
    {
      "lang": "es",
      "value": "El mecanismo de detección de alteraciones del BIOS no fue activado en Lenovo ThinkPad A285, versiones de BIOS hasta r0xuj70w; A485, versiones de BIOS hasta r0wuj65w; T495 versiones de BIOS hasta r12uj55w; T495s/X395 versiones de BIOS hasta r13uj47w, mientras es presionado el botón de reinicio de emergencia que puede permitir un acceso no autorizado"
    }
  ],
  "lastModified": "2026-06-17T03:26:17.420",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_a275_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6FAF7EBD-E0B3-414B-BDF7-5CF70AD53F2C",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_a275:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "577AACCC-001A-4C73-B036-CA942080304F"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_a285_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E8B80F55-F4AD-45BF-8FD4-C546138A179F",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_a285:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "259D895B-9968-41CF-8DB4-FAAB5A4C04AF"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_a475_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FA0CC938-42B6-420F-8660-3BA69FA50F9C",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_a475:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "EE1D9347-9561-45A3-A434-3A0802BC8953"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_a485_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD997105-2FB0-41C7-AC12-98C972485EEE",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_a485:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "37B871C5-73F4-43FF-BCF1-B9B1B52FAC31"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_t495_drift_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "33CEA6E9-09DD-45AB-B77D-1DB74BE1721D",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_t495_drift:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B0E27B26-3BF6-4FCE-BF1B-8F0B857BF454"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_t495s_jazz_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0906BF92-4099-4A8E-9D8E-00296E55E8EA",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_t495s_jazz:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "FC42264F-7F33-48BC-BD51-B7003EC67AC2"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_x1_carbon_\\(20bx\\)_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9C24CC5B-2CCE-4D50-8911-53F944F57435",
              "versionEndExcluding": "n14et54w"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_x1_carbon_\\(20bx\\):-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "452FEEFB-F073-45F0-AAB1-6CD6C67B7488"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:lenovo:thinkpad_x395_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CA8F1835-628C-4AF0-A32B-00E9AB7EFA2F",
              "versionEndExcluding": "2020-08-30"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:lenovo:thinkpad_x395:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "C9D5D2DC-32C0-4540-82AF-D97735383028"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "psirt@lenovo.com"
}