CVE-2026-84354

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome FileSystem Leads to Code Execution

Publication date: 2026-09-02

Last updated on: 2026-09-03

Assigner: Chrome

Description

Incorrect authorization in FileSystem in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-02

Last Modified

2026-09-03

Generated

2026-09-22

AI Q&A

2026-09-02

EPSS Evaluated

2026-09-21

NVD

CVE-2026-84354

EUVD

EUVD-2026-69730

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 152.0.7977.75 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability involves incorrect authorization in Google Chrome's FileSystem component. A remote attacker could exploit it through social engineering to execute arbitrary code outside the sandbox by tricking a user into visiting a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 152.0.7977.75. Detection involves checking the installed Chrome version. On Windows, run: wmic product where "name like 'Google Chrome'" get version. On Linux, run: google-chrome --version. If the version is below 152.0.7977.75, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system outside the browser's security sandbox. This could lead to unauthorized access to your data, installation of malware, or further compromise of your device.

Compliance Impact

The vulnerability involves incorrect authorization in Google Chrome's FileSystem, enabling remote attackers to execute arbitrary code outside the sandbox via crafted HTML pages. This could lead to unauthorized data access or modification, potentially violating GDPR's data protection requirements or HIPAA's safeguards for protected health information.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.75 or later to address the incorrect authorization vulnerability in FileSystem.

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