{
  "fix": "firefox 85.0\u002Bbuild1-0ubuntu0.18.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-85.0-build1-0ubuntu0.18.04.1",
  "summary": "firefox 85.0\u002Bbuild1-0ubuntu0.18.04.1, released January 25, 2021, fixes 11 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 85.0\u002Bbuild1-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2021-01-25T16:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-23961, high severity",
  "supported": false,
  "cveCount": 11,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01477,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "85.0\u002Bbuild1-0ubuntu0.18.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-23961",
      "url": "https://patchblox.com/security/cve/CVE-2021-23961",
      "title": "Firefox ESR and 1 other: Further techniques that built on the slipstream research combined with a malicious webpage could have\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.4,
      "epss": 0.01477,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23964",
      "url": "https://patchblox.com/security/cve/CVE-2021-23964",
      "title": "Firefox ESR and 2 others: Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01361,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23960",
      "url": "https://patchblox.com/security/cve/CVE-2021-23960",
      "title": "Firefox ESR and 2 others: Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01289,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23954",
      "url": "https://patchblox.com/security/cve/CVE-2021-23954",
      "title": "Firefox ESR and 2 others: Using the new logical assignment operators in a JavaScript switch statement could have caused a type\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01186,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23965",
      "url": "https://patchblox.com/security/cve/CVE-2021-23965",
      "title": "Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 84.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00969,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23962",
      "url": "https://patchblox.com/security/cve/CVE-2021-23962",
      "title": "Firefox ESR and 1 other: Incorrect use of the \u0027\u003CRowCountChanged\u003E\u0027 method could have led to a user-after-poison and a potentially\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.00886,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23953",
      "url": "https://patchblox.com/security/cve/CVE-2021-23953",
      "title": "Firefox ESR and 2 others: If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.01056,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23956",
      "url": "https://patchblox.com/security/cve/CVE-2021-23956",
      "title": "Firefox ESR and 1 other: An ambiguous file picker design could have confused users who intended to select and upload a single\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00993,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23958",
      "url": "https://patchblox.com/security/cve/CVE-2021-23958",
      "title": "Firefox ESR and 1 other: The browser could have been confused into transferring a screen sharing state into another tab, which\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00877,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23955",
      "url": "https://patchblox.com/security/cve/CVE-2021-23955",
      "title": "Firefox ESR and 1 other: The browser could have been confused into transferring a pointer lock state into another tab, which could\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.1,
      "epss": 0.00657,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23963",
      "url": "https://patchblox.com/security/cve/CVE-2021-23963",
      "title": "Firefox ESR and 1 other: When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing state\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.00657,
      "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"
  }
}