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Critical· 9.6official fix available

CVE-2026-11056

A critical flaw in Google Chrome on Windows lets a malicious web page escape the browser sandbox if the renderer process is compromised. The bug is due to missing input validation in SiteIsolation.

publishedJun 4, 2026
last modifiedJul 23, 2026
sourcesNVD
severity · cvss
9.6
critical · how bad it is
exploitation · epss
<1%
14th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 23, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Google Chrome on Windows, versions earlier than 149.0.7827.53.

02

Real-world impact

An attacker could gain full control of the victim’s computer, read or modify files, install malware, or steal data.

03

Why this severity

The CVSS score is high because the flaw allows remote exploitation with no user interaction, giving the attacker complete control over confidentiality, integrity, and availability.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade Google Chrome to version 149.0.7827.53 or later.
  2. 02Restart the browser to apply the update.

NVD-referenced vendor advisory

05

Timeline

  1. Jun 4, 2026 · Jun 4, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 23, 2026 · 12d ago
    Advisory updated
    The NVD record was last revised.
  3. Jul 24, 2026 · 11d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
CVE-2026-11056: A critical flaw in Google Chrome on Windows lets a malicious web page · Vulnary