{
  "fix": "firefox 87.0\u002Bbuild3-0ubuntu0.18.04.2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-87.0-build3-0ubuntu0.18.04.2",
  "summary": "firefox 87.0\u002Bbuild3-0ubuntu0.18.04.2, released June 24, 2021, fixes 9 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 87.0\u002Bbuild3-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2021-06-24T07:15:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-23987, high severity",
  "supported": false,
  "cveCount": 9,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01506,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "87.0\u002Bbuild3-0ubuntu0.18.04.2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-23987",
      "url": "https://patchblox.com/security/cve/CVE-2021-23987",
      "title": "Firefox ESR and 2 others: Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01416,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23981",
      "url": "https://patchblox.com/security/cve/CVE-2021-23981",
      "title": "Firefox ESR and 2 others: A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.01145,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23988",
      "url": "https://patchblox.com/security/cve/CVE-2021-23988",
      "title": "Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 86.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01076,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23985",
      "url": "https://patchblox.com/security/cve/CVE-2021-23985",
      "title": "Firefox ESR and 1 other: If an attacker is able to alter specific about:config values (for example malware running on the user\u0027s\u2026",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.5,
      "epss": 0.01506,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29955",
      "url": "https://patchblox.com/security/cve/CVE-2021-29955",
      "title": "Firefox ESR and 1 other: A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.3,
      "epss": 0.01481,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23984",
      "url": "https://patchblox.com/security/cve/CVE-2021-23984",
      "title": "Firefox ESR and 2 others: A malicious extension could have opened a popup window lacking an address bar.",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01113,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23982",
      "url": "https://patchblox.com/security/cve/CVE-2021-23982",
      "title": "Firefox ESR and 2 others: Using techniques that built on the slipstream research, a malicious webpage could have scanned both an\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00743,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23983",
      "url": "https://patchblox.com/security/cve/CVE-2021-23983",
      "title": "Firefox ESR and 1 other: By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00736,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23986",
      "url": "https://patchblox.com/security/cve/CVE-2021-23986",
      "title": "Firefox ESR and 1 other: A malicious extension with the \u0027search\u0027 permission could have installed a new search engine whose favicon\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00434,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T07:53:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}