{
  "cveId": "CVE-2026-88077",
  "url": "https://patchblox.com/security/cve/CVE-2026-88077",
  "summary": "CVE-2026-88077 is fixed in 4 products on 2 platforms, first by Microsoft Edge Dev 155.0.4273.0, released September 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EInteger overflow or wraparound in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.\u003C/p\u003E",
  "published": "2026-10-26T07:00:00Z",
  "severity": "Important",
  "cvss": 8.8,
  "cwe": "Integer Overflow or Wraparound",
  "epss": 0.00625,
  "epssPercentile": 0.50231,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88077",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Microsoft Edge",
      "fixedVersion": "154.0.4258.62",
      "fix": "Microsoft Edge 154.0.4258.62",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge-154.0.4258.62",
      "released": "2026-10-05T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Beta",
      "fixedVersion": "155.0.4283.33",
      "fix": "Microsoft Edge Beta 155.0.4283.33",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-155.0.4283.33",
      "released": "2026-10-02T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Dev",
      "fixedVersion": "155.0.4273.0",
      "fix": "Microsoft Edge Dev 155.0.4273.0",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.dev-155.0.4273.0",
      "released": "2026-09-11T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge WebView2 Runtime",
      "fixedVersion": "154.0.4258.62",
      "fix": "Microsoft Edge WebView2 Runtime 154.0.4258.62",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-154.0.4258.62",
      "released": "2026-10-05T00:00:00Z"
    },
    {
      "platform": "macos",
      "product": "Microsoft Edge",
      "fixedVersion": "154.0.4258.62",
      "fix": "Microsoft Edge 154.0.4258.62",
      "url": "https://patchblox.com/security/fix/macos/com.microsoft.edgemac-154.0.4258.62",
      "released": "2026-10-04T15:43:40Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}