{
  "threat_severity" : "Moderate",
  "public_date" : "2021-07-28T00:00:00Z",
  "bugzilla" : {
    "description" : "webkitgtk: Memory initialization issue possibly leading to memory disclosure",
    "id" : "1986856",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1986856"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-20",
  "details" : [ "A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may result in the disclosure of process memory." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2025-07-07T00:00:00Z",
    "advisory" : "RHSA-2025:10364",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "webkitgtk4-0:2.48.3-2.el7_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-05-18T00:00:00Z",
    "advisory" : "RHSA-2021:1586",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "webkit2gtk3-0:2.30.4-1.el8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "webkitgtk",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "webkitgtk3",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "webkit2gtk3",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-1820\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-1820\nhttps://webkitgtk.org/security/WSA-2021-0004.html" ],
  "name" : "CVE-2021-1820",
  "csaw" : false
}