CVE-2026-95356

chromium-browser: Use after free in WindowDialog

View on CVE.org
Published Sep 29, 2026 CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Description
Use after free in WindowDialog in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

Analysis

AI-generated

Technical impact

A use‑after‑free flaw in Chrome's WindowDialog component allows an attacker to craft an HTML page that, if the user opens it, can execute arbitrary code beyond the browser sandbox. The vulnerability is a classic memory‑corruption issue (CWE-416) that enables remote code execution.

Affected Systems

All users of Google Chrome versions prior to 154.0.8037.57 running the stable channel are vulnerable. The flaw exists in the Desktop WebView component used by the browser.

Risk and Exploitability

With a CVSS score of 9.6, this vulnerability attains critical severity. Although the EPSS score is not publicly available, the lack of listing in the CISA KEV catalog does not diminish the potential impact. A remote attacker can exploit the flaw through social engineering, delivering a crafted web page that, when visited, triggers the use‑after‑free and executes code outside the browser sandbox.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Install the latest stable version of Google Chrome (154.0.8037.57 or later) immediately.
  • If an immediate upgrade is not possible, block or disable the affected feature through Chrome policies or by avoiding untrusted web content.
  • Maintain an update policy to ensure Chrome is kept current with security releases.

Generated by OpenCVE AI on September 29, 2026 at 23:47 UTC.

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6513-1 chromium security update
History
Type Values Removed Values Added
Title Remote Code Execution via Use-After‑Free in Chrome WindowDialog chromium-browser: Use after free in WindowDialog
References
Metrics threat_severity

None

 threat_severity

Important
Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Remote Code Execution via Use-After‑Free in Chrome WindowDialog
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description Use after free in WindowDialog in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
Weaknesses CWE-416
References
Earlier changes (1)
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Sep 30, 2026, 3:55 AM
Reserved
Sep 22, 2026, 5:10 AM

View source JSON

Updated
Sep 29, 2026, 6:07 PM

JSON

Status
Analyzed
Published
Sep 29, 2026, 6:17 PM
Modified
Sep 30, 2026, 4:25 PM

View source JSON

Severity
Important
Public date
Sep 29, 2026, 5:31 PM

View source Bugzilla JSON

Updated
Sep 30, 2026, 12:00 AM

JSON