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Vulnerability2 · 1 read

CVE-2026-95356

Use-After-Free Sandbox Escape in Google Chrome WindowDialog

CVSS 3.1
9.6 critical
EPSS
—
Published
·
Modified
Analyze CVE-2026-95356 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Google Chrome versions before 154.0.8037.57 have a use-after-free flaw (CWE-416) in the WindowDialog component, rated Critical by Chromium. A remote attacker who uses social engineering to get a victim to open a crafted HTML page can trigger the bug and potentially run arbitrary code outside the browser sandbox. Anyone still running an unpatched Chrome release is affected. CVSS has not been scored, no public proof-of-concept is known, and the issue is not listed in CISA’s Known Exploited Vulnerabilities catalog.

What to do: Update Google Chrome to version 154.0.8037.57 or later and fully restart the browser so the update takes effect. Until then, avoid opening untrusted links or HTML pages, and have enterprise admins push the fixed build through managed update channels and confirm the running version afterward.

ProductAffected
Google Chromeprior to 154.0.8037.57
Estimated exposure
mass≈2–3 billion Chrome users/installations on builds before 154.0.8037.57 — Google Chrome has a publicly reported global user base on the order of billions and the dominant desktop browser share, and this bug affects every release before the fixed build, so nearly the entire installed base is plausibly exposed…

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description · NVD

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)

Vendors
google
Products
chrome
Weakness
CWE-416
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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