{
  "cveId": "CVE-2021-29975",
  "url": "https://patchblox.com/security/cve/CVE-2021-29975",
  "summary": "CVE-2021-29975 is fixed in 4 products on 2 platforms, first by firefox 90.0\u002Bbuild1-0ubuntu0.18.04.1, released July 14, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Firefox ESR and 1 other: Through a series of DOM manipulations, a message, over which the attacker had control of the text but\u2026",
  "description": "Through a series of DOM manipulations, a message, over which the attacker had control of the text but not HTML or formatting, could be overlaid on top of another domain (with the new domain correctly shown in the address bar) resulting in possible user confusion. This vulnerability affects Firefox \u003C 90.",
  "published": "2021-07-14T17:00:00Z",
  "severity": "Medium",
  "cvss": 6.5,
  "epss": 0.00961,
  "epssPercentile": 0.61812,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2021-29975",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Mozilla Firefox ESR (en-US)",
      "fixedVersion": "91.0",
      "fix": "Mozilla Firefox ESR (en-US) 91.0",
      "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox.esr-91.0",
      "released": "2021-08-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "fix": "firefox 90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-90.0-build1-0ubuntu0.18.04.1",
      "released": "2021-07-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "fix": "firefox 90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-90.0-build1-0ubuntu0.20.04.1",
      "released": "2021-07-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "fix": "firefox-geckodriver 90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-geckodriver-90.0-build1-0ubuntu0.18.04.1",
      "released": "2021-07-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "fix": "firefox-geckodriver 90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-geckodriver-90.0-build1-0ubuntu0.20.04.1",
      "released": "2021-07-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "fix": "firefox-mozsymbols 90.0\u002Bbuild1-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-90.0-build1-0ubuntu0.18.04.1",
      "released": "2021-07-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "fix": "firefox-mozsymbols 90.0\u002Bbuild1-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-mozsymbols-90.0-build1-0ubuntu0.20.04.1",
      "released": "2021-07-14T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}