Privilege Escalation in Google Chrome Mojo on Windows

Publication date: 2026-06-11

Last updated on: 2026-06-23

Assigner: Chrome

Description

Inappropriate implementation in Mojo in Google Chrome on Windows prior to 149.0.7827.115 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-11

Last Modified

2026-06-23

Generated

2026-07-02

AI Q&A

2026-06-12

EPSS Evaluated

2026-06-30

NVD

CVE-2026-12018

EUVD

EUVD-2026-36339

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 149.0.7827.115 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability is an inappropriate implementation in Mojo within Google Chrome on Windows versions prior to 149.0.7827.115. It allows a local attacker to escalate their privileges at the operating system level by using a malicious file.

Impact Analysis

The vulnerability can allow a local attacker to gain higher privileges on the affected Windows system. This means the attacker could perform actions that normally require elevated permissions, potentially compromising system security and accessing sensitive data or system functions.

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