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CVE-2020-27894

Status: ModifiedMedium (5.5)—

The issue was addressed with additional user controls. This issue is fixed in macOS Big Sur 11.0.1. Users may be unable to remove metadata indicating where files were downloaded from.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apple — Macos

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-27894",
  "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:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "macOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "11.0",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-12-08T20:15:15.667",
  "references": [
    {
      "url": "http://seclists.org/fulldisclosure/2020/Dec/32",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/en-us/HT211931",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "product-security@apple.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2020/Dec/32",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/en-us/HT211931",
      "tags": [
        "Release Notes",
        "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 issue was addressed with additional user controls. This issue is fixed in macOS Big Sur 11.0.1. Users may be unable to remove metadata indicating where files were downloaded from."
    },
    {
      "lang": "es",
      "value": "Se abordó el problema con controles de usuario adicionales. Este problema se corrigió en macOS Big Sur versión 11.0.1. Los usuarios no pueden eliminar los metadatos indicando de dónde fueron descargados unos archivos"
    }
  ],
  "lastModified": "2026-06-17T03:09:48.213",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "76BFC9D4-7D15-4C23-A54A-3F5A0B8BC542",
              "versionEndExcluding": "11.0.1",
              "versionStartIncluding": "11.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "product-security@apple.com"
}