CVE-2020-15896

{
  "id": "CVE-2020-15896",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-07-22T19:15:12.897",
  "references": [
    {
      "url": "https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication-bypass issue was discovered on D-Link DAP-1522 devices 1.4x before 1.10b04Beta02. There exist a few pages that are directly accessible by any unauthorized user, e.g., logout.php and login.php. This occurs because of checking the value of NO_NEED_AUTH. If the value of NO_NEED_AUTH is 1, the user has direct access to the webpage without any authentication. By appending a query string NO_NEED_AUTH with the value of 1 to any protected URL, any unauthorized user can access the application directly, as demonstrated by bsc_lan.php?NO_NEED_AUTH=1."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema de omisión de autenticación en dispositivos D-Link DAP-1522 versiones 1.4x anteriores a 1.10b04Beta02. Se presentan algunas páginas que son directamente accesibles por cualquier usuario no autorizado, por ejemplo, logout.php y login.php. Esto ocurre debido a una comprobación del valor de NO_NEED_AUTH. Si el valor de NO_NEED_AUTH es 1, el usuario tiene acceso directo a la página web sin ninguna autenticación. Al agregar una cadena de consulta de NO_NEED_AUTH con el valor de 1 en cualquier URL protegida, cualquier usuario no autorizado puede acceder a la aplicación directamente, como es demostrado por bsc_lan.php?NO_NEED_AUTH=1"
    }
  ],
  "lastModified": "2026-06-17T02:57:21.960",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:dlink:dap-1522_firmware:1.41:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DAED7DD2-697E-44B9-84B4-76741ABDAEDC"
            },
            {
              "criteria": "cpe:2.3:o:dlink:dap-1522_firmware:1.42:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B2FAD6C-3720-4C06-B17C-090ED917DCC9"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:dlink:dap-1522:a1:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "4EC07FCB-ED7F-4C87-8C31-0839F09CD695"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}