{
  "cveId": "CVE-2025-6554",
  "url": "https://patchblox.com/security/cve/CVE-2025-6554",
  "summary": "CVE-2025-6554 is fixed in 7 products on 2 platforms, first by Microsoft Edge Dev 139.0.3365.2, released June 10, 2025. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on July 2, 2025. Patch Radar priority: Patch now.",
  "title": "Chromium: CVE-2025-6554 Type Confusion in V8",
  "description": "\u003Cp\u003EThis CVE was assigned by Chrome.  Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see \u003Ca href=\u0022https://chromereleases.googleblog.com/202%5BSS9.1%5D5\u0022\u003EGoogle Chrome Releases\u003C/a\u003E for more information. Google is aware that an exploit for CVE-2025-6554 exists in the wild.\u003C/p\u003E",
  "published": "2025-06-30T22:15:29Z",
  "severity": "high",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
  "cwe": "CWE-843: Type Confusion",
  "epss": 0.14142,
  "epssPercentile": 0.96596,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": false,
  "kev": {
    "added": "2025-07-02T00:00:00Z",
    "due": "2025-07-23T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable."
  },
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-6554",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Google Chrome (EXE)",
      "fixedVersion": "144.0.7559.133",
      "fix": "Google Chrome (EXE) 144.0.7559.133",
      "url": "https://patchblox.com/security/fix/windows-app/google.chrome.exe-144.0.7559.133",
      "released": "2026-02-03T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Google Chrome Dev (EXE)",
      "fixedVersion": "144.0.7534.3",
      "fix": "Google Chrome Dev (EXE) 144.0.7534.3",
      "url": "https://patchblox.com/security/fix/windows-app/google.chrome.dev.exe-144.0.7534.3",
      "released": "2025-11-20T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge",
      "fixedVersion": "138.0.3351.65",
      "fix": "Microsoft Edge 138.0.3351.65",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge-138.0.3351.65",
      "released": "2025-07-01T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Beta",
      "fixedVersion": "138.0.3351.65",
      "fix": "Microsoft Edge Beta 138.0.3351.65",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-138.0.3351.65",
      "released": "2025-07-01T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge Dev",
      "fixedVersion": "139.0.3365.2",
      "fix": "Microsoft Edge Dev 139.0.3365.2",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edge.dev-139.0.3365.2",
      "released": "2025-06-10T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft Edge WebView2 Runtime",
      "fixedVersion": "138.0.3351.65",
      "fix": "Microsoft Edge WebView2 Runtime 138.0.3351.65",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-138.0.3351.65",
      "released": "2025-07-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "chromium",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "138.0.7204.92-1~deb12u1",
      "fix": "DSA-5955-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5955-1",
      "released": "2025-07-02T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "chromium",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "138.0.7204.92-1",
      "fix": "DEBIAN-CVE-2025-6554",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-6554",
      "released": "2025-06-30T22:15:29Z"
    },
    {
      "platform": "linux",
      "product": "chromium",
      "release": "Debian 14",
      "fixedVersion": "138.0.7204.92-1",
      "fix": "DEBIAN-CVE-2025-6554",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-6554",
      "released": "2025-06-30T22:15:29Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}