CVE-2026-87646

Analyzed Analyzed - Analysis Complete

Use After Free in Google Chrome Web Authentication

Publication date: 2026-09-09

Last updated on: 2026-09-10

Assigner: Chrome

Description

Use after free in Web Authentication in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-09

Last Modified

2026-09-10

Generated

2026-09-30

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87646

EUVD

EUVD-2026-74508

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use-after-free issue in Web Authentication in Google Chrome versions prior to 153.0.8010.36. A use-after-free occurs when a program continues to use memory after it has been freed, potentially leading to arbitrary code execution outside the sandbox. An attacker could exploit this by tricking a user into visiting a crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 153.0.8010.36. To detect it, check your Chrome version by running chrome://version/ in the browser address bar. If your version is below 153.0.8010.36, the system is vulnerable.

Impact Analysis

This vulnerability could allow a remote attacker to execute arbitrary code on your system outside the browser sandbox. This means they could potentially take control of your computer, install malware, or steal sensitive data. It requires user interaction, such as visiting a malicious webpage.

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 manipulation. Such risks may impact compliance with GDPR (data protection) and HIPAA (health data security) by potentially exposing sensitive information or violating integrity requirements.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the use after free vulnerability in Web Authentication.

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