Chrome Renderer Sandbox Escape via Object Lifecycle Issue

Publication date: 2026-06-17

Last updated on: 2026-06-18

Assigner: Chrome

Description

Object lifecycle issue in Metrics in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-17

Last Modified

2026-06-18

Generated

2026-07-07

AI Q&A

2026-06-17

EPSS Evaluated

2026-07-06

NVD

CVE-2026-12465

EUVD

EUVD-2026-37550

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 149.0.7827.155 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability is an object lifecycle issue in the Metrics component of Google Chrome versions prior to 149.0.7827.155. It allows a remote attacker who has compromised the renderer process to potentially escape the browser's sandbox by using a specially crafted HTML page.

Impact Analysis

If exploited, this vulnerability can allow an attacker to escape the sandbox environment of the browser, which is designed to isolate web content and limit its access to the system. This could lead to the attacker gaining higher privileges on the affected system, potentially resulting in full system compromise, data theft, or further malicious activities.

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