CVE-2026-87487

Analyzed Analyzed - Analysis Complete

Missing Authorization in Google Chrome FileSystem

Publication date: 2026-09-09

Last updated on: 2026-09-10

Assigner: Chrome

Description

Missing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-09

Last Modified

2026-09-10

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87487

EUVD

EUVD-2026-74534

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability involves missing authorization in Google Chrome's FileSystem feature. It allows a remote attacker who has already compromised the renderer process to potentially execute arbitrary code outside the sandbox. This is achieved through a crafted HTML page and may involve social engineering tactics.

Detection Guidance

This vulnerability requires detecting signs of a compromised renderer process or unauthorized code execution attempts. Monitor Chrome processes for unusual behavior, check for unexpected network connections from Chrome, and review logs for renderer process crashes or sandbox escapes. Use system monitoring tools like ps, netstat, or Process Explorer to inspect running Chrome processes and their activities.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system, bypassing security restrictions. This could lead to unauthorized access to sensitive data, installation of malware, or further compromise of your device.

Compliance Impact

This vulnerability allows remote attackers to execute arbitrary code outside the sandbox via crafted HTML pages, which could lead to unauthorized data access or modification. This may violate GDPR's data protection requirements and HIPAA's security rules for protected health information if exploited.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the missing authorization issue in the FileSystem component.

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