{
  "fix": "firefox 76.0\u002Bbuild2-0ubuntu0.18.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-76.0-build2-0ubuntu0.18.04.1",
  "summary": "firefox 76.0\u002Bbuild2-0ubuntu0.18.04.1, released May 6, 2020, fixes 8 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "firefox 76.0\u002Bbuild2-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2020-05-06T17:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2020-6831, rated Critical",
  "supported": false,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.05803,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "76.0\u002Bbuild2-0ubuntu0.18.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2020-6831",
      "url": "https://patchblox.com/security/cve/CVE-2020-6831",
      "title": "Firefox ESR: A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC.",
      "priority": "Urgent",
      "severity": "CRITICAL",
      "cvss": 9.8,
      "epss": 0.05803,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12395",
      "url": "https://patchblox.com/security/cve/CVE-2020-12395",
      "title": "Firefox ESR: Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox\u2026",
      "priority": "Urgent",
      "severity": "CRITICAL",
      "cvss": 9.8,
      "epss": 0.02597,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12387",
      "url": "https://patchblox.com/security/cve/CVE-2020-12387",
      "title": "Firefox ESR: A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability.",
      "priority": "Urgent",
      "severity": "CRITICAL",
      "cvss": 8.8,
      "epss": 0.01438,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12392",
      "url": "https://patchblox.com/security/cve/CVE-2020-12392",
      "title": "Firefox ESR: The \u0027Copy as cURL\u0027 feature of Devtools\u0027 network tab did not properly escape the HTTP POST data of a request,\u2026",
      "priority": "Urgent",
      "severity": "CRITICAL",
      "cvss": 6.1,
      "epss": 0.00347,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12396",
      "url": "https://patchblox.com/security/cve/CVE-2020-12396",
      "title": "Firefox ESR: Mozilla developers and community members reported memory safety bugs present in Firefox 75.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.01676,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12390",
      "url": "https://patchblox.com/security/cve/CVE-2020-12390",
      "title": "Firefox ESR: Incorrect origin serialization of URLs with IPv6 addresses could lead to incorrect security checks.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.01622,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12391",
      "url": "https://patchblox.com/security/cve/CVE-2020-12391",
      "title": "Firefox ESR: Documents formed using data: URLs in an OBJECT element failed to inherit the CSP of the creating context.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.5,
      "epss": 0.01462,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-12394",
      "url": "https://patchblox.com/security/cve/CVE-2020-12394",
      "title": "Firefox ESR: A logic flaw in our location bar implementation could have allowed a local attacker to spoof the current\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 3.3,
      "epss": 0.00285,
      "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"
  }
}