{
  "fix": "firefox 88.0\u002Bbuild2-0ubuntu0.18.04.2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-88.0-build2-0ubuntu0.18.04.2",
  "summary": "firefox 88.0\u002Bbuild2-0ubuntu0.18.04.2, released April 25, 2021, fixes 12 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "firefox 88.0\u002Bbuild2-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2021-04-25T17:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-23994, high severity",
  "supported": false,
  "cveCount": 12,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01756,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "88.0\u002Bbuild2-0ubuntu0.18.04.2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-23994",
      "url": "https://patchblox.com/security/cve/CVE-2021-23994",
      "title": "Firefox ESR and 2 others: A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01756,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23999",
      "url": "https://patchblox.com/security/cve/CVE-2021-23999",
      "title": "Firefox ESR and 2 others: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01372,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29946",
      "url": "https://patchblox.com/security/cve/CVE-2021-29946",
      "title": "Firefox ESR and 2 others: Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01303,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23995",
      "url": "https://patchblox.com/security/cve/CVE-2021-23995",
      "title": "Firefox ESR and 2 others: When Responsive Design Mode was enabled, it used references to objects that were previously freed.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01181,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-24002",
      "url": "https://patchblox.com/security/cve/CVE-2021-24002",
      "title": "Firefox ESR and 2 others: When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01125,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29947",
      "url": "https://patchblox.com/security/cve/CVE-2021-29947",
      "title": "Firefox ESR and 1 other: Mozilla developers and community members reported memory safety bugs present in Firefox 87.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00867,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23997",
      "url": "https://patchblox.com/security/cve/CVE-2021-23997",
      "title": "Firefox ESR and 1 other: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00816,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29945",
      "url": "https://patchblox.com/security/cve/CVE-2021-29945",
      "title": "Firefox ESR and 2 others: The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01202,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23996",
      "url": "https://patchblox.com/security/cve/CVE-2021-23996",
      "title": "Firefox ESR and 1 other: By utilizing 3D CSS in conjunction with Javascript, content could have been rendered outside the webpage\u0027s\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00719,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-24000",
      "url": "https://patchblox.com/security/cve/CVE-2021-24000",
      "title": "Firefox ESR and 1 other: A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 3.1,
      "epss": 0.00605,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23998",
      "url": "https://patchblox.com/security/cve/CVE-2021-23998",
      "title": "Firefox ESR and 2 others: Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00594,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-24001",
      "url": "https://patchblox.com/security/cve/CVE-2021-24001",
      "title": "Firefox ESR and 1 other: A compromised content process could have performed session history manipulations it should not have been\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.0057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T13:55:20Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}