CVE-2026-102321

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Type Confusion in Google Chrome

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Chrome

Description

Type confusion in V8 in Google Chrome prior to 154.0.8037.92 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-29

Last Modified

2026-09-29

Generated

2026-09-30

AI Q&A

2026-09-30

EPSS Evaluated

N/A

NVD

CVE-2026-102321

EUVD

EUVD-2026-89398

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 154.0.8037.92 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-843	The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Attack-Flow Graph

Executive Summary

This vulnerability is a type confusion issue in V8, the JavaScript engine used by Google Chrome. It allows a remote attacker to execute arbitrary code within the browser's sandbox by tricking a user into visiting a specially crafted HTML page. The sandbox is designed to isolate potentially malicious code, but this flaw bypasses that protection.

Detection Guidance

Detection of this vulnerability requires checking the installed version of Google Chrome. Compare the version against 154.0.8037.92. If your version is prior to this, the system is vulnerable. Use commands like 'google-chrome --version' or check via package manager (e.g., 'apt list --installed | grep chrome' for Debian-based systems).

Inspect network traffic for unusual HTML pages or scripts exploiting type confusion. Monitor for crashes or unexpected behavior in Chrome processes.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your device through your web browser. This could lead to unauthorized access to your data, installation of malware, or further attacks on your system. Users should update Chrome immediately to mitigate the risk.

Mitigation Strategies

Update Google Chrome to version 154.0.8037.92 or later immediately. Disable automatic updates temporarily if needed to verify the update before deployment. Restrict untrusted HTML content access and monitor for suspicious activity.

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