{
  "fix": "OPENSUSE-SU-2026:21853-1",
  "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21853-1",
  "summary": "OPENSUSE-SU-2026:21853-1, released September 15, 2026, fixes 24 CVEs in MozillaFirefox (version 153.2.0-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "MozillaFirefox security update",
  "released": "2026-09-15T14:40:48Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-84134, rated Critical",
  "supported": true,
  "cveCount": 24,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0057,
  "maxCvss": 10,
  "vendorAdvisory": "https://osv.dev/vulnerability/openSUSE-SU-2026:21853-1",
  "appliesTo": [
    {
      "product": "MozillaFirefox",
      "productUrl": "https://patchblox.com/security/product/linux/mozillafirefox",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "153.2.0-160000.1.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-84134",
      "url": "https://patchblox.com/security/cve/CVE-2026-84134",
      "title": "Other issue in the Profile Backup component",
      "priority": "Urgent",
      "cvss": 9.8,
      "epss": 0.0057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-75874",
      "url": "https://patchblox.com/security/cve/CVE-2026-75874",
      "title": "Sandbox escape in the Remote Settings Client component",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 10,
      "epss": 0.00455,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84143",
      "url": "https://patchblox.com/security/cve/CVE-2026-84143",
      "title": "Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.8,
      "epss": 0.00378,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84119",
      "url": "https://patchblox.com/security/cve/CVE-2026-84119",
      "title": "Sandbox escape due to use-after-free in the DOM: Navigation component",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.6,
      "epss": 0.00319,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84121",
      "url": "https://patchblox.com/security/cve/CVE-2026-84121",
      "title": "Sandbox escape due to use-after-free in the DOM: Security component",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.6,
      "epss": 0.00319,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84130",
      "url": "https://patchblox.com/security/cve/CVE-2026-84130",
      "title": "Information disclosure in the Graphics: WebGPU component",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00439,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84123",
      "url": "https://patchblox.com/security/cve/CVE-2026-84123",
      "title": "Privilege escalation due to use-after-free in the Graphics: WebGPU component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00436,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84144",
      "url": "https://patchblox.com/security/cve/CVE-2026-84144",
      "title": "Internally found bugs fixed in Thunderbird 155 and Thunderbird ESR 153.2",
      "priority": "High",
      "cvss": 7.5,
      "epss": 0.00425,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-74952",
      "url": "https://patchblox.com/security/cve/CVE-2026-74952",
      "title": "Privilege escalation in the Application Update component",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00415,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84145",
      "url": "https://patchblox.com/security/cve/CVE-2026-84145",
      "title": "Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15",
      "priority": "High",
      "severity": "high",
      "cvss": 7.5,
      "epss": 0.0037,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84141",
      "url": "https://patchblox.com/security/cve/CVE-2026-84141",
      "title": "Integer overflow in the Graphics: ImageLib component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00342,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84131",
      "url": "https://patchblox.com/security/cve/CVE-2026-84131",
      "title": "Privilege escalation due to invalid pointer in the Graphics component",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00328,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84132",
      "url": "https://patchblox.com/security/cve/CVE-2026-84132",
      "title": "Information disclosure in the Networking: HTTP component",
      "priority": "High",
      "severity": "important",
      "cvss": 7.5,
      "epss": 0.00256,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84120",
      "url": "https://patchblox.com/security/cve/CVE-2026-84120",
      "title": "Use-after-free in the Audio/Video component",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00219,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84122",
      "url": "https://patchblox.com/security/cve/CVE-2026-84122",
      "title": "Use-after-free in the Audio/Video component",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00214,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84129",
      "url": "https://patchblox.com/security/cve/CVE-2026-84129",
      "title": "Site isolation issue in the DOM: Navigation component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00185,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84133",
      "url": "https://patchblox.com/security/cve/CVE-2026-84133",
      "title": "Site isolation issue in the DOM: Push Subscriptions component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00185,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84140",
      "url": "https://patchblox.com/security/cve/CVE-2026-84140",
      "title": "Site isolation issue in the DOM: Navigation component",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00182,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84124",
      "url": "https://patchblox.com/security/cve/CVE-2026-84124",
      "title": "Use-after-free in the DOM: Core \u0026 HTML component",
      "priority": "High",
      "severity": "medium",
      "cvss": 8.8,
      "epss": 0.0017,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84139",
      "url": "https://patchblox.com/security/cve/CVE-2026-84139",
      "title": "Clickjacking issue in the DOM: Events component",
      "priority": "Routine",
      "cvss": 6.1,
      "epss": 0.00337,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84118",
      "url": "https://patchblox.com/security/cve/CVE-2026-84118",
      "title": "Use-after-free in the JavaScript: GC component",
      "priority": "Routine",
      "cvss": 5.4,
      "epss": 0.00287,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84125",
      "url": "https://patchblox.com/security/cve/CVE-2026-84125",
      "title": "Use-after-free in the DOM: Core \u0026 HTML component",
      "priority": "Routine",
      "cvss": 5.4,
      "epss": 0.00287,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84136",
      "url": "https://patchblox.com/security/cve/CVE-2026-84136",
      "title": "Other issue in the DOM: Navigation component",
      "priority": "Routine",
      "severity": "important",
      "cvss": 6.1,
      "epss": 0.00202,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-84137",
      "url": "https://patchblox.com/security/cve/CVE-2026-84137",
      "title": "Spoofing issue in the DOM: Core \u0026 HTML component",
      "priority": "Routine",
      "severity": "important",
      "cvss": 4.3,
      "epss": 0.00129,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}