{
  "threat_severity" : "Moderate",
  "public_date" : "2026-05-19T12:29:52Z",
  "bugzilla" : {
    "description" : "firefox: Privilege escalation in the Enterprise Policies component",
    "id" : "2479880",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2479880"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-266",
  "details" : [ "Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.", "A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:\nPrivilege escalation in the Enterprise Policies component" ],
  "statement" : "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-05-27T00:00:00Z",
    "advisory" : "RHSA-2026:21380",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "firefox-0:140.11.0-1.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-06-01T00:00:00Z",
    "advisory" : "RHSA-2026:22325",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "thunderbird-0:140.11.0-1.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-05-27T00:00:00Z",
    "advisory" : "RHSA-2026:21382",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "firefox-0:140.11.0-1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-06-03T00:00:00Z",
    "advisory" : "RHSA-2026:22643",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "thunderbird-0:140.11.0-1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-05-27T00:00:00Z",
    "advisory" : "RHSA-2026:21378",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "firefox-0:140.11.0-1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-05-27T00:00:00Z",
    "advisory" : "RHSA-2026:21381",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "thunderbird-0:140.11.0-1.el9_8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "rhel10/firefox-flatpak",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "rhel10/thunderbird-flatpak",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Affected",
    "package_name" : "firefox",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "thunderbird",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-8957\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-8957\nhttps://www.mozilla.org/security/advisories/mfsa2026-48/#CVE-2026-8957\nhttps://www.mozilla.org/security/advisories/mfsa2026-51/#CVE-2026-8957" ],
  "name" : "CVE-2026-8957",
  "csaw" : false
}