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CVE-2021-30897

Status: ModifiedMedium (6.5)—

An issue existed in the specification for the resource timing API. The specification was updated and the updated specification was implemented. This issue is fixed in macOS Monterey 12.0.1. A malicious website may exfiltrate data cross-origin.

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 (4)

Apple — IpadosApple — Iphone OSApple — MacosApple — Tvos

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-30897",
  "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": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "macOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "12.0",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-24T19:15:17.710",
  "references": [
    {
      "url": "https://support.apple.com/en-us/HT212869",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/kb/HT212814",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/kb/HT212815",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/en-us/HT212869",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/kb/HT212814",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/kb/HT212815",
      "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": "An issue existed in the specification for the resource timing API. The specification was updated and the updated specification was implemented. This issue is fixed in macOS Monterey 12.0.1. A malicious website may exfiltrate data cross-origin."
    },
    {
      "lang": "es",
      "value": "Existía un problema en la especificación de la API de sincronización de recursos. Se ha actualizado la especificación y se ha implementado la especificación actualizada. Este problema se ha solucionado en macOS Monterey versión 12.0.1. Un sitio web malicioso puede exfiltrar datos de forma cruzada\n"
    }
  ],
  "lastModified": "2026-06-17T03:51:05.873",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "090FB24C-D685-4422-A936-821B30F9655D",
              "versionEndExcluding": "15.0"
            },
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5354DEB-CF04-4795-8D90-E280F0A859CA",
              "versionEndExcluding": "15.0"
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "579B2A0D-A84F-45C2-B545-35ECEA3297DA",
              "versionEndExcluding": "12.0.1"
            },
            {
              "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B32A978E-673C-421D-93A1-CA84D90B67E4",
              "versionEndExcluding": "15.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "product-security@apple.com"
}