CVE-2026-91734

Received Received - Intake

Incorrect Authorization in Google Chrome on Windows

Publication date: 2026-09-15

Last updated on: 2026-09-16

Assigner: Chrome

Description

Incorrect authorization in Core in Google Chrome on on Windows prior to 153.0.8010.47 allowed a local attacker to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-16

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-91734

EUVD

EUVD-2026-79959

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.47 (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 on Windows. It allows a local attacker to bypass sandboxing and execute arbitrary code outside the sandbox through a local program. The issue was present in versions prior to 153.0.8010.47.

Impact Analysis

If exploited, this vulnerability could let an attacker run malicious code on your system with high privileges. This could lead to unauthorized access, data theft, or system compromise. Since it requires local access, physical or network access to the device may be needed.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.47 or later to address the incorrect authorization issue. Ensure automatic updates are enabled to receive the latest security patches promptly.

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