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FKIE_CVE-2021-1788

Vulnerability from fkie_nvd - Published: 2021-04-02 18:15 - Updated: 2026-06-17 03:32
Summary
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.
References
product-security@apple.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
product-security@apple.comhttps://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/HT212148Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/HT212149Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/HT212152Release Notes, Vendor Advisory
product-security@apple.comhttps://www.debian.org/security/2021/dsa-4923Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212148Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212149Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212152Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4923Third Party Advisory
Impacted products
Vendor Product Version
apple ipados *
apple iphone_os *
apple mac_os_x *
apple mac_os_x *
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.14.6
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple macos *
apple safari *
apple tvos *
apple watchos *
debian debian_linux 10.0
fedoraproject fedora 33

{
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "7.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
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          "vendor": "Apple",
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            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
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            {
              "lessThan": "14.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "product-security@apple.com"
    }
  ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution."
    },
    {
      "lang": "es",
      "value": "Se abord\u00f3 un problema de uso de la memoria previamente liberada con una administraci\u00f3n de la memoria mejorada.\u0026#xa0;Este problema es corregido en macOS Big Sur versi\u00f3n 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS versi\u00f3n 14.4, watchOS versi\u00f3n 7.3, iOS versi\u00f3n 14.4 y iPadOS versi\u00f3n 14.4, Safari versi\u00f3n 14.0.3.\u0026#xa0;El procesamiento de contenido web dise\u00f1ado malicioso puede conllevar a una ejecuci\u00f3n de c\u00f3digo arbitraria."
    }
  ],
  "id": "CVE-2021-1788",
  "lastModified": "2026-06-17T03:32:33.773",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
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          "attackVector": "NETWORK",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2021-04-02T18:15:21.687",
  "references": [
    {
      "source": "product-security@apple.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/"
    },
    {
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  ],
  "sourceIdentifier": "product-security@apple.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

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