Executive brief
A security vulnerability in Google Chrome's GPU component could allow a malicious website to bypass the browser's security sandbox. This sandbox is designed to prevent malicious code from escaping the browser and interacting with the rest of the computer. If successfully exploited, an attacker who has already gained control of a browser tab could potentially access or modify files and data on the underlying Windows operating system.
Technical details
A vulnerability exists in the GPU component of Google Chrome for Windows due to improper input validation (CWE-20). The flaw allows a remote attacker who has already compromised the renderer process (typically via a separate exploit) to bypass sandbox restrictions. By convincing a user to visit a specially crafted HTML page, the attacker can leverage this insufficient validation to escape the browser's security boundaries and execute code with higher privileges on the host system. This issue was addressed in Chrome version 149.0.7827.53.
Affected products
- Google Chrome prior to 149.0.7827.53
Timeline
- 2026-06-02: patched: Chrome 149.0.7827.53 released to stable channel.
- 2026-06-04: disclosed: CVE-2026-11021 published.